Timeline of the far future

While the future cannot be predicted with certainty, present understanding in various scientific fields allows for the prediction of some far-future events, if only in the broadest outline.

These fields include astrophysics, which studies how planets and stars form, interact, and die; particle physics, which has revealed how matter behaves at the smallest scales; evolutionary biology, which studies how life evolves over time; plate tectonics, which shows how continents shift over millennia; and sociology, which examines how human societies and cultures evolve. +more

The far future begins after the current millennium comes to an end, starting with the 4th millennium in 3001 CE, until the furthest reaches of future time. These timelines include alternative future events that address unresolved scientific questions, such as whether humans will become extinct, whether protons decay, and whether the Earth survives when the Sun expands to become a red giant.

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Lists

Keys
"background: lavender;" > |16px|alt</h1>Astronomy and astrophysics|Astronomy and astrophysics Astronomy and astrophysics
"background: #f0dc82;" > |16px|alt</h1>Geology and planetary science|Geology and planetary science Geology and planetary science
"background: #CEFF00;" > |16px|alt</h1>Biology|Biology Biology
"background: #FFE4E1;" > |16px|alt</h1>Particle physics|Particle physics Particle physics
"background: #e0ffff;" > |16px|alt</h1>Mathematics|Mathematics Mathematics
Technology and culture

Earth, the Solar System, and the Universe

All projections of the future of Earth, the Solar System, and the universe must account for the second law of thermodynamics, which states that entropy, or a loss of the energy available to do work, must rise over time. Stars will eventually exhaust their supply of hydrogen fuel and burn out. The Sun will likely expand sufficiently to overwhelm many of the inner planets (Mercury, Venus, possibly Earth), but not the giant planets, including Jupiter and Saturn. +more

Afterwards, the Sun would be reduced to the size of a white dwarf, and the outer planets and their moons would continue orbiting this diminutive solar remnant. This future situation may be similar to the white dwarf star MOA-2010-BLG-477L and the Jupiter-sized exoplanet orbiting it.

Long after the death of the solar system, physicists expect that matter itself will eventually disintegrate under the influence of radioactive decay, as even the most stable materials break apart into subatomic particles. Current data suggest that the universe has a flat geometry (or very close to flat), and thus will not collapse in on itself after a finite time. This infinite future allows for the occurrence of even massively improbable events, such as the formation of Boltzmann brains.

"wikitable" style"width: 100%; margin-right: 0;">

SI second longer than it is today. To compensate, either a leap second will have to be added to the end of a day multiple times during each month, or one or more consecutive leap seconds will have to be added at the end of some or all months.

One of the potential long-term effects of global warming, this is separate from the shorter-term threat to the West Antarctic Ice Sheet.

Although Earth cycles through many different naked eye northern pole stars, Vega is the brightest.

However, according to more recent studies in 2016, anthropogenic climate change, if left unchecked, may delay this otherwise expected glacial period by as much as an additional 50,000 years, potentially skipping it entirely.

Niagara Falls will have eroded the remaining 32 km to Lake Erie, and will therefore cease to exist.

The many glacial lakes of the Canadian Shield will have been erased by post-glacial rebound and erosion.

(However, humans have already introduced non-native invasive earthworms of North America on a much shorter timescale, causing a shock to the regional ecosystem.)

ihi), the youngest volcano in the Hawaiian–Emperor seamount chain, will rise above the surface of the ocean and become a new volcanic island.

|

300,000

Desdemona and Cressida, moons of Uranus, will likely have collided.

to the Sun before moving away. This will gravitationally perturb members of the Oort cloud, a halo of icy bodies orbiting at the edge of the Solar System, thereafter raising the likelihood of a cometary impact in the inner Solar System.

See predictions for notable centaurs.

The Indian Plate will advance into Tibet by

. Nepal's territory, whose boundaries are defined by the Himalayan peaks and on the plains of India, will cease to exist.

Even without a mass extinction, by this time most current species will have disappeared through the background extinction rate, with many clades gradually evolving into new forms.

The Californian coast will begin to be subducted into the Aleutian Trench.

Africa's collision with Eurasia will close the Mediterranean Basin and create a mountain range similar to the Himalayas.

The Appalachian Mountains peaks will largely wear away,

weathering at 5.7 Bubnoff units, although topography will actually rise as regional valleys deepen at twice this rate.

The Southern Rockies in the United States are eroding at a somewhat slower rate.

Upper estimate for lifespan of the rings of Saturn in their current state.

By this time, carbon dioxide levels will fall to the point at which [[C3 carbon fixation|

photosynthesis]] is no longer possible. All plants that utilize

photosynthesis (≈99 percent of present-day species) will die. The extinction of

plant life is likely to be a long-term decline rather than a sharp drop. It is likely that plant groups will die one by one well before the critical carbon dioxide level is reached. The first plants to disappear will be

herbaceous plants, followed by deciduous forests, evergreen broad-leaf forests and finally evergreen conifers.

Many animals may be driven to the poles or possibly underground. These creatures would become active during the polar night and aestivate during the polar day due to the intense heat and radiation. Much of the land would become a barren desert, and plants and animals would primarily be found in the oceans. As pointed out by Peter Ward and Donald Brownlee in their book The Life and Death of Planet Earth, according to NASA Ames scientist Kevin Zahnle, this is the earliest time for plate tectonics to eventually stop, due to the gradual cooling of the Earth's core, which could potentially turn the Earth back into a waterworld.

photosynthesis]] is no longer possible. Without plant life to recycle oxygen in the atmosphere, free oxygen and the ozone layer will disappear from the atmosphere allowing for intense levels of deadly UV light to reach the surface, and animals in food chains that were dependent on live plants will disappear shortly afterward. In the book The Life and Death of Planet Earth, authors Peter D. Ward and Donald Brownlee state that some animal life may be able to survive in the oceans. Eventually, however, all multicellular life will die out. At most, animal life could survive about 100 million years after plant life dies out, with the last animals being animals that do not depend on living plants such as termites or those near hydrothermal vents such as worms of the genus Riftia. The only life left on the Earth after this will be single-celled organisms.

. The atmosphere will become a "moist greenhouse", resulting in a runaway evaporation of the oceans. This would cause plate tectonics to stop completely, if not already stopped before this time.

Pockets of water may still be present at the poles, allowing abodes for simple life.

. From then on, it will become gradually cooler while its luminosity will continue to increase.

, even at the poles.

in diameter per year.

Without its liquid outer core, Earth's magnetosphere shuts down, and solar winds gradually deplete the atmosphere.

|

3 billion

—hot enough to melt some surface rock.

The planets of the Solar System will almost certainly not be disturbed by these events.

During this era, Saturn's moon Titan may reach surface temperatures necessary to support life.

. Based upon the weighted least-squares best fit with the initial mass equal to a solar mass. At this point, if the Earth survives, temperatures on the surface of the planet, as well as the other planets in the Solar System, will begin dropping rapidly, due to the white dwarf Sun emitting much less energy than it does today.

= −1.5]].

If the density of dark energy is less than −1, then the Universe's expansion would continue to accelerate and the Observable Universe would continue to get smaller. Around 200 million years before the Big Rip, galaxy clusters like the Local Group or the Sculptor Group would be destroyed. Sixty million years before the Big Rip, all galaxies will begin to lose stars around their edges and will completely disintegrate in another 40 million years. Three months before the Big Rip, star systems will become gravitationally unbound, and planets will fly off into the rapidly expanding universe. Thirty minutes before the Big Rip, planets, stars, asteroids and even extreme objects like neutron stars and black holes will evaporate into atoms. 100 zeptoseconds (10−19 seconds) before the Big Rip, atoms would break apart. Ultimately, once the Rip reaches the Planck scale, cosmic strings would be disintegrated as well as the fabric of spacetime itself. The universe would enter into a "rip singularity" when all non-zero distances become infinitely large. Whereas a "crunch singularity" involves all matter being infinitely concentrated, in a "rip singularity", all matter is infinitely spread out.

However, observations of galaxy cluster speeds by the Chandra X-ray Observatory suggest that the true value of

is c. −0.991, meaning the Big Rip is unlikely to occur.

Thereafter, the tidal action of the white dwarf Sun will extract angular momentum from the system, causing the lunar orbit to decay and the Earth's spin to accelerate.

to

, rendering it essentially undetectable with current technology.

The Universe's expansion, assuming a constant dark energy density, multiplies the wavelength of the cosmic microwave background by 1029, exceeding the scale of the cosmic light horizon and rendering its evidence of the Big Bang undetectable. However, it may still be possible to determine the expansion of the universe through the study of hypervelocity stars.

, runs out of hydrogen in its core and becomes a white dwarf.

Collisions between brown dwarfs will create new red dwarfs on a marginal level: on average, about 100 stars will be shining in what was once the Milky Way. Collisions between stellar remnants will create occasional supernovae.

By this point, the Sun will have cooled to

.

vanishes by Hawking radiation, assuming it does not accrete any additional matter nor merge with other black holes. It might be the very last entity from the two galaxies to disappear, and the last evidence of their existence.

" decay by Hawking radiation. This marks the end of the Black Hole Era. Beyond this time, if protons do decay, the Universe enters the Dark Era, in which all physical objects have decayed to subatomic particles, gradually winding down to their final energy state in the heat death of the universe.

On this vast timescale, even ultra-stable iron stars will have been destroyed by quantum tunnelling events. At this lower end of the timescale, iron stars decay directly to black holes, as this decay mode is much more favourable than decaying into a neutron star (which has an expected timescale of 10^} years), and later decaying into a black hole. The subsequent evaporation of each resulting black hole into subatomic particles (a process lasting roughly 10100 years), and subsequent shift to the Dark Era is on these timescales instantaneous.

This is also the highest estimated possible time for the Black Hole Era (and subsequent Dark Era) to finally commence. Beyond this point, it is almost certain that the universe will be an almost pure vacuum, with all baryonic matter having decayed into subatomic particles, until it reaches its final energy state, assuming it does not happen before this time.

(Because the total number of ways in which all the subatomic particles in the observable universe can be combined is 10^},

a number which, when multiplied by 10^}}, disappears into the rounding error, this is also the time required for a quantum-tunnelled and quantum fluctuation-generated Big Bang to produce a new universe identical to our own, assuming that every new universe contained at least the same number of subatomic particles and obeyed laws of physics within the landscape predicted by string theory.)''

"col" > |16px|link</h1>#Lists Years from now Event
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1,000 tidal acceleration>lunar tides decelerating the Earth's rotation, the average length of a solar day will be
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1,100 Precession>precess, Gamma Cephei replaces Polaris as the northern pole star.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 10,000 If a failure of the Wilkes Subglacial Basin "ice plug" in the next few centuries were to endanger the East Antarctic Ice Sheet, it would take up to this long to melt completely. Sea levels would rise 3 to 4 metres.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 10,000This represents the time by which the event will most probably have happened. It may occur randomly at any time from the present. The red supergiant star Antares will likely have exploded in a supernova. The explosion should be easily visible on Earth in daylight.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 11,700 Vega, the List of brightest stars>fifth brightest star in the sky, becomes the northern pole star.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 11,000–15,000 axial tilt will reverse, causing summer and winter to occur on opposite sides of Earth's orbit. This means that the seasons in the Southern Hemisphere will be less extreme than they are today, as it will be facing away from the Sun at Earth's Perihelion and aphelion>perihelion and towards the Sun at aphelion, while the seasons in the Northern Hemisphere, which experiences more pronounced seasonal variation due to a higher percentage of land, will be more extreme.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 15,000 Sahara pump theory, the Axial tilt#Long term>oscillating tilt of Earth's poles will move the North African Monsoon far enough north to change the Sahara's climate back into a tropical one such as it had 5,000–10,000 years ago.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 17,000 Best-guess recurrence rate for a "civilization-threatening" supervolcanic eruption large enough to spew one teratonne (one trillion tonnes) of pyroclastic material.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 25,000 Martian polar ice caps>northern polar ice cap could recede as Mars reaches a warming peak of the northern hemisphere during the c. 50,000-year perihelion precession aspect of its Milankovitch cycle.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 36,000 red dwarf Ross 248 will pass within 3.024 light-years of Earth, becoming the closest star to the Sun. It will recede after about 8,000 years, making first Alpha Centauri (again) and then Gliese 445 the nearest stars (List of nearest stars and brown dwarfs#Distant future and past encounters>see timeline).
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 50,000 According to Berger and Loutre (2002), the current interglacial period will end, sending the Earth back into a glacial period of the current ice age, regardless of the effects of anthropogenic global warming.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 50,000 SI>International System of Units>SI second longer than it is today. In order to compensate, either a leap second will have to be added to the end of every day, or the length of the day will have to be officially lengthened by one SI second.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 100,000 The proper motion of stars across the celestial sphere, which results from their movement through the Milky Way, renders many of the constellations unrecognizable.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 100,000 hypergiant>red hypergiant star VY Canis Majoris will likely have exploded in a supernova.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 100,000 earthworms, such as Megascolecidae, will have naturally spread north through the United States Upper Midwest to the Canada–United States border>Canada–US border, recovering from the Laurentide Ice Sheet glaciation (38°N to 49°N), assuming a migration rate of 10 metres per year.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science > 100,000 long-term effects of global warming, 10% of greenhouse gas>anthropogenic carbon dioxide will still remain in a stabilized atmosphere.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 250,000 Kamaʻehuakanaloa Seamount>Kamaʻehuakanaloa (formerly Lō
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics At some point in the next few hundred thousand years, the Wolf–Rayet star WR 104 may explode in a supernova. There is a small chance WR 104 is spinning fast enough to produce a gamma-ray burst, and an even smaller chance that such a GRB could pose a threat to life on Earth.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 500,000 Asteroid impact avoidance>assuming that it cannot be averted.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 500,000 The rugged terrain of Badlands National Park in South Dakota will have eroded completely.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 1 million Meteor Crater, a large impact crater in Arizona considered the "freshest" of its kind, will have worn away.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1 million Highest estimated time until the red supergiant star Betelgeuse explodes in a supernova. For at least a few months, the supernova will be visible on Earth in daylight. Studies suggest this supernova will occur within a million years, and perhaps even as soon as within the next 100,000 years.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1.28 ± 0.05 million The star Gliese 710 will pass as close as 0.0676 parsecs
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 2 million Estimated time for the full recovery of coral reef ecosystems from human-caused ocean acidification if such acidification goes unchecked; the recovery of marine ecosystems after the acidification event that occurred about 65 million years ago took a similar length of time.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 2 million+ The Grand Canyon will erode further, deepening slightly, but principally widening into a broad valley surrounding the Colorado River.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 2.7 million Centaur >centaurs, that are unstable because of gravitational interaction of the several outer planets.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 3 million Due to tidal deceleration gradually slowing down Earth's rotation, a day on Earth is expected to be one minute longer than it is today.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 10 million The Red Sea will flood the widening East African Rift valley, causing a new ocean basin to divide the continent of Africa and the African Plate into the newly formed Nubian Plate and the Somali Plate.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 10 million biodiversity after a potential Holocene extinction, if it were on the scale of the five previous extinction event>major extinction events.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 10 million–1 billion Cupid >Cupid and Belinda, moons of Uranus, will likely have collided.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 50 million Phobos >Phobos collides with Mars.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 50 million Christopher R. Scotese, the movement of the San Andreas Fault will cause the Gulf of California to flood into the Central Valley >Central Valley. This will form a new inland sea on the West Coast of North America, causing the current locations of Los Angeles and San Francisco to merge.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 50–60 million The Canadian Rockies will wear away to a plain, assuming a rate of 60 Bubnoff units.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 50–400 million Estimated time for Earth to naturally replenish its fossil fuel reserves.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 80 million Hawaii >Big Island will have become the last of the current Hawaiian Islands to sink beneath the surface of the ocean, while a more recently formed chain of "new Hawaiian Islands" will then have emerged in their place.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 100 million K–Pg_extinction>Cretaceous–Paleogene extinction event>K–Pg extinction 66 million years ago, assuming this cannot be averted.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 100 million According to the Pangaea Proxima Model created by Christopher R. Scotese, a new subduction zone will open in the Atlantic Ocean and the Americas will begin to converge back toward Africa.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 110 million The Sun's luminosity will have increased by 1%.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 180 million Due to the gradual slowing down of Earth's rotation, a day on Earth will be one hour longer than it is today.
"background: #e0ffff;" > |16px|link</h1>#Lists|alt= Mathematics|Mathematics 230 million Prediction of the orbits of the planets is impossible over time spans greater than this, due to the limitations of Lyapunov time.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 240 million Solar System completes Galactic year>one full orbit of the Galactic Center.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 250 million According to Christopher R. Scotese, due to the northward movement of the West Coast of North America, the coast of California will collide with Alaska.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 250–350 million supercontinent. Four potential arrangements of this configuration have been dubbed Amasia >Amasia, Novopangaea, Pangaea Proxima, and Aurica. This will likely result in a glacial period, lowering sea levels and increasing oxygen levels, further lowering global temperatures.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology > 250 million Rapid biological evolution may occur due to the formation of a supercontinent causing lower temperatures and higher oxygen levels. Increased competition between species due to the formation of a supercontinent, increased volcanic activity and less hospitable conditions due to global warming from a brighter Sun could result in a mass extinction event from which plant and animal life may not fully recover.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 300 million Hadley cell>Hadley cells to roughly 40° north and south, the amount of arid land will increase by 25%.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 300–600 million Estimated time for Venus's mantle temperature to reach its maximum. Then, over a period of about 100 million years, major subduction occurs and the crust is recycled.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 350 million According to the extroversion model first developed by Paul F. Hoffman, subduction ceases in the Pacific Ocean Basin.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 400–500 million The supercontinent (Pangaea Ultima, Novopangaea, Amasia, or Aurica) will likely have rifted apart. This will likely result in higher global temperatures, similar to the Cretaceous period.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 500 million gamma-ray burst, or massive, hyperenergetic supernova, occurs within 6,500 light-years of Earth; close enough for its rays to affect Earth's ozone layer and potentially trigger a Extinction event>mass extinction, assuming the hypothesis is correct that a previous such explosion triggered the Ordovician–Silurian extinction event. However, the supernova would have to be precisely oriented relative to Earth to have any such effect.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 600 million Tidal acceleration moves the Moon far enough from Earth that total solar eclipses are no longer possible.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 500–600 million The Sun's increasing luminosity begins to disrupt the carbonate–silicate cycle; higher luminosity increases weathering of surface rocks, which traps carbon dioxide in the ground as carbonate. As water evaporates from the Earth's surface, rocks harden, causing plate tectonics to slow and eventually stop once the oceans evaporate completely. With less volcanism to recycle carbon into the Earth's atmosphere, carbon dioxide levels begin to fall.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 500–800 million carnivorous>Carnivorous plant>carnivorous, adapting to desiccation, or associating with fungi. These adaptations are likely to appear near the beginning of the moist greenhouse. The death of most plant life will result in less oxygen in the atmosphere, allowing for more DNA-damaging ultraviolet radiation to reach the surface. The rising temperatures will increase chemical reactions in the atmosphere, further lowering oxygen levels. Animals begin to die off concurrently with plants due to insufficient oxygen, beginning with large vertebrates and then progressively smaller vertebrates; invertebrates would survive the longest. Flying animals would be better off because of their ability to travel large distances looking for cooler temperatures.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 800–900 million
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science Long and short scales#Short scale>short scale. Subduction>subducted into the mantle. If this were to continue uninterrupted, it would reach an equilibrium where 65% of present-day surface water would be subducted.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 1.1 billion The Sun's luminosity will have increased by 10%, causing Earth's surface temperatures to reach an average of around
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 1.2 billion High estimate until all plant life dies out, assuming some form of photosynthesis is possible despite extremely low carbon dioxide levels. If this is possible, rising temperatures will make any animal life unsustainable from this point on.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 1.3 billion Eukaryotic life dies out on Earth due to carbon dioxide starvation. Only prokaryotes remain.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1.5 billion Callisto >Callisto is captured into the mean–motion resonance of the other Galilean moons of Jupiter, completing the 1:2:4:8 chain. (Currently only Io, Europa, and Ganymede participate in the 1:2:4 resonance.)
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1.5–1.6 billion The Sun's rising luminosity causes its circumstellar habitable zone to move outwards; as carbon dioxide rises in Mars's atmosphere, its surface temperature rises to levels akin to Earth during the ice age.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 1.5–4.5 billion Tidal acceleration moves the Moon far enough from the Earth to the point where it can no longer stabilize Earth's axial tilt. As a consequence, Earth's true polar wander becomes chaotic and extreme, leading to dramatic shifts in the planet's climate due to the changing axial tilt.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 1.6 billion Lower estimate until all remaining life, which by now had been reduced to colonies of unicellular organisms in isolated microenvironments such as high-altitude lakes and caves, goes extinct.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics < 2 billion First close passage of the Andromeda Galaxy and the Milky Way.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 2 billion High estimate until the Earth's oceans evaporate if the atmospheric pressure were to decrease via the nitrogen cycle.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 2.55 billion The Sun will have reached a maximum surface temperature of
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 2.8 billion Earth's surface temperature will reach around
"background: #CEFF00;" > |16px|link</h1>#Lists|alt= Biology|Biology 2.8 billion High estimate until all remaining life goes extinct.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 3–4 billion Future of Earth#Solidification of the outer core>The Earth's core freezes if the inner core continues to grow in size, based on its current growth rate of
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics There is a roughly 1-in-100,000 chance that the Earth will be ejected into interstellar space by a stellar encounter before this point, and a 1-in-300-billion chance that it will be both ejected into space and captured by another star around this point. If this were to happen, any remaining life on Earth could potentially survive for far longer if it survived the interstellar journey.
"background: lavender;" > |16px|link</h1>#Lists|alt= Astronomy and astrophysics|Astronomy and astrophysics 3.3 billion Jupiter's gravity may make Mercury >Mercury's orbit so eccentric as to cross Venus's orbit by this time, sending the inner Solar System into chaos. Other possible scenarios include Mercury colliding with the Sun, being ejected from the Solar System, or colliding with Venus.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt= Geology and planetary science|Geology and planetary science 3.5–4.5 billion The Sun's luminosity will have increased by 35–40%, causing all water currently present in lakes and oceans to evaporate, if it had not done so earlier. The greenhouse effect caused by the massive, water-rich atmosphere will result in Earth's surface temperature rising to
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 3.6 billion Neptune's moon Triton >Triton falls through the planet's Roche limit, potentially disintegrating into a planetary ring system similar to Saturn's.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 4.5 billion Mars reaches the same solar flux the Earth did when it first formed, 4.5 billion years ago from today.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics < 5 billion Andromeda–Milky Way collision>merged with the Milky Way, forming a galaxy dubbed "Milkomeda". There is also a small chance of the Solar System being ejected.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 5.4 billion main sequence and begins stellar evolution>evolving into a red giant.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 6.5 billion Mars reaches the same solar radiation flux as Earth today, after which it will suffer a similar fate to the Earth as described above.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 6.6 billion The Sun may experience a helium flash, resulting in its core becoming as bright as the combined luminosity of all the stars in the Milky Way galaxy.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 7.5 billion Earth and Mars may become tidally locked with the expanding red giant Sun.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 7.59 billion The Earth and Moon are very likely destroyed by falling into the Sun, just before the Sun reaches the tip of its red giant phase.This has been a tricky question for quite a while; see the 2001 paper by Rybicki, K. R. and Denis, C. However, according to the latest calculations, this happens with a very high degree of certainty. Before the final collision, the Moon possibly spirals below Earth's Roche limit, breaking into a ring of debris, most of which falls to the Earth's surface.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 7.9 billion Hertzsprung–Russell diagram, achieving its maximum radius of 256 times the present-day value. In the process, Mercury >Mercury, Venus, and Earth are very likely destroyed.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 8 billion The Sun becomes a carbon–oxygen white dwarf with about 54.05% its present mass.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 22.3 billion Big Rip, assuming a model of dark energy with [[Equation of state (cosmology)>
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 50 billion tidally_locked>Tidal locking>tidally locked, with each showing only one face to the other.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 65 billion The Moon may end up colliding with the Earth due to the decay of its orbit, assuming the Earth and Moon are not engulfed by the red giant Sun.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 100 billion–1012 (1 trillion) All the c. 47 galaxies of the Local Group will coalesce into a single large galaxy.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 100–150 billion Metric expansion of space>Universe's expansion causes all galaxies beyond the former Milky Way's Local Group to disappear beyond the cosmic light horizon, removing them from the observable universe.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 150 billion The cosmic microwave background cools from its current temperature of c.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 325 billion Estimated time by which the expansion of the universe isolates all gravitationally bound structures within their own cosmological horizon. At this point, the universe has expanded by a factor of more than 100 million, and even individual exiled stars are isolated.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 800 billion red dwarf stars pass through their blue dwarf >blue dwarf stage of peak luminosity.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1012 (1 trillion) Low estimate for the time until star formation ends in galaxies as galaxies are depleted of the gas clouds they need to form stars.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1.05×1012 (1.05 trillion) Estimated time by which the Universe will have expanded by a factor of more than 1026, reducing the average particle density to less than one particle per cosmological horizon volume. Beyond this point, particles of unbound intergalactic matter are effectively isolated, and collisions between them cease to affect the future evolution of the Universe.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1.4×1012 (1.4 trillion) Estimated time by which the cosmic background radiation cools to a floor temperature of 10−30 K and does not decline further. This residual temperature comes from horizon radiation, which does not decline over time.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 2×1012 (2 trillion) Estimated time by which all objects beyond our Local Group are redshifted by a factor of more than 1053. Even gamma rays that they emit are stretched so much that their wavelengths are greater than the physical diameter of the horizon. The resolution time for such radiation will exceed the physical age of the universe.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 4×1012 (4 trillion) Estimated time until the red dwarf star Proxima Centauri, the closest star to the Sun at a distance of 4.25 light-years, leaves the main sequence and becomes a white dwarf.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1013 (10 trillion) Estimated time of peak habitability in the universe, unless habitability around low-mass stars is suppressed.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1.2×1013 (12 trillion) Estimated time until the red dwarf VB 10, as of 2016 the least massive main sequence star with an estimated mass of 0.075
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 3×1013 (30 trillion) Estimated time for stars (including the Sun) to undergo a close encounter with another star in local stellar neighborhoods. Whenever two stars (or stellar remnants) pass close to each other, their planets' orbits can be disrupted, potentially ejecting them from the system entirely. On average, the closer a planet's orbit to its parent star the longer it takes to be ejected in this manner, because it is gravitationally more tightly bound to the star.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1014 (100 trillion) star formation ends in galaxies. This marks the transition from the Future of an expanding universe#Degenerate Era>Stelliferous Era to the Degenerate Era; with no free hydrogen to form new stars, all remaining stars slowly exhaust their fuel and die. By this time, the universe will have expanded by a factor of approximately 102554.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1.1–1.2×1014 (110–120 trillion) red dwarfs, have lifespans of roughly 10–20 trillion years). After this point, the stellar-mass objects remaining are stellar remnants (white dwarfs, neutron stars, stellar black hole>black holes) and brown dwarfs.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1015 (1 quadrillion) Estimated time until stellar close encounters detach all planets in star systems (including the Solar System) from their orbits.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1019 to 1020(10–100 quintillion) Estimated time until 90–99% of brown dwarfs and stellar remnants (including the Sun) are ejected from galaxies. When two objects pass close enough to each other, they exchange orbital energy, with lower-mass objects tending to gain energy. Through repeated encounters, the lower-mass objects can gain enough energy in this manner to be ejected from their galaxy. This process eventually causes the Milky Way to eject the majority of its brown dwarfs and stellar remnants.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1020 (100 quintillion) black dwarf Sun due to the decay of its orbit via emission of Gravitational wave>gravitational radiation, if the Earth is not ejected from its orbit by a stellar encounter or engulfed by the Sun during its red giant phase.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1023 (100 sextillion) Around this timescale most stellar remnants and other objects are ejected from the remains of their galactic cluster.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1030 (1 nonillion) Estimated time until most or all of the remaining 1–10% of stellar remnants not ejected from galaxies fall into their galaxies' central supermassive black holes. By this point, with binary stars having fallen into each other, and planets into their stars, via emission of gravitational radiation, only solitary objects (stellar remnants, brown dwarfs, ejected planetary-mass objects, black holes) will remain in the universe.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 2×1036 (2 undecillion) nucleons in the observable universe to decay, if the hypothesized Proton decay>proton half-life takes its smallest possible value (8.2×1033 years).Around 264 half-lives. Tyson et al. employ the computation with a different value for half-life.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 3×1043 (30 tredecillion) inflationary>inflation >inflationary and that the same process that made baryons predominate over anti-baryons in the early Universe makes protons decay. By this time, if protons do decay, the Black Hole Era, in which black holes are the only remaining celestial objects, begins.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 3.14×1050 Estimated time until a micro black hole of 1 Earth mass decays into subatomic particles by the emission of Hawking radiation.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 1.59×1054 Estimated time until a micro black hole with a Schwarzschild radius of 6 inches and mass of 17.2 Earth masses decays by Hawking radiation.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 5.62×1055 Estimated time until a micro black hole with a Schwarzschild radius of 0.5 meters and mass of 56.4 Earth masses decays by Hawking radiation.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 1065 Assuming that protons do not decay, estimated time for rigid objects, from free-floating rocks in space to planets, to rearrange their atoms and molecules via quantum tunneling. On this timescale, any discrete body of matter "behaves like a liquid" and becomes a smooth sphere due to diffusion and gravity.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 1.16×1067 Estimated time until a black hole of 1 solar mass decays by Hawking radiation.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 1.17×1077 Estimated time until an Earth-sized black hole of 2160 solar masses decays by Hawking radiation.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 1.54×1091–1.41×1092 supermassive black hole from the merger of Sagittarius A* and the Andromeda Galaxy#Nucleus>P2 concentration during the collision of the Milky Way and Andromeda galaxies
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 3.34×1099 Ton 618, which is the List of most massive black holes>most massive known as of 2018 at 66 billion solar masses, dissipates by Hawking radiation, assuming zero angular momentum (that it does not rotate).
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10106–1.16×10109 Estimated time until supermassive black holes of 1014 (100 trillion) solar masses, predicted to form during the gravitational collapse of galaxy superclusters,
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10139 False vacuum decay#Electroweak vacuum decay>collapse of a false vacuum; 95% confidence interval is 1058 to 10549 years due in part to uncertainty about the top quark's mass.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10200 baryon_non-conservation>Baryon number>baryon non-conservation processes, virtual black holes, sphalerons, etc.) on time scales of 1046 to 10200 years.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 101100–32000 Estimated time for black dwarfs of 1.2 solar masses or more to undergo supernovae as a result of slow silicon-nickel-iron fusion, as the declining electron fraction lowers their Chandrasekhar limit, assuming protons do not decay.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 101500 Assuming protons do not decay, estimated time until all baryonic matter in stellar remnants, planets, and planetary-mass objects has either fused together via muon-catalyzed fusion to form iron-56 or decayed from a higher mass element into iron-56 to form iron stars.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics Numerical digit>digits would remain unchanged regardless of which conventional units they were listed in, be they Planck time units or star lifespans. Low estimate for the time until all iron stars collapse via quantum tunnelling into black holes, assuming no proton decay or virtual black holes, and that Planck scale black holes can exist.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10^}10^}is 1 followed by 1050 (100 quindecillion) zeroes Estimated time for a Boltzmann brain to appear in the vacuum via a spontaneous entropy decrease.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10^} Highest estimate for the time until all iron stars collapse via quantum tunnelling into neutron stars or black holes, assuming no proton decay or virtual black holes, and that black holes below the Chandrasekhar mass cannot form directly. On these timescales, neutron stars above the Chandrasekhar mass rapidly collapse into black holes, and black holes formed by these processes instantaneously evaporate into subatomic particles.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10^} Highest estimate for the time it takes for the universe to reach its final energy state.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10^}} inflation >inflationary events, resulting in new Big Bangs giving birth to new universes.

Humanity and human constructs

To date five spacecraft (Voyager 1, Voyager 2, Pioneer 10, Pioneer 11 and New Horizons) are on trajectories which will take them out of the Solar System and into interstellar space. Barring an extremely unlikely collision with some object, the craft should persist indefinitely. +more

"wikitable" style"width: 100%; margin-right: 0;">

above Earth, will return to the surface.

, "Launched in 1965 and carrying about 4.5 kilograms of uranium 235, Snap 10A is in a 1,000-year orbit ..."

Official Zeitpyramide website. Retrieved 14 December 2010.

The Human Interference Task Force has provided the theoretical basis for United States plans for future nuclear semiotics.

Estimated lifespan of the HD-Rosetta analog disc, an ion beam-etched writing medium on nickel plate, a technology developed at Los Alamos National Laboratory and later commercialized. (The Rosetta Project uses this technology, named after the Rosetta Stone.)

area of Ukraine and Belarus left deserted by the 1986 Chernobyl disaster, will return to normal levels of radiation.

Any reply will take at least another 25,000 years from the time of its transmission (assuming no faster-than-light communication).

Planned lifespan of the Human Document Project being developed at the University of Twente in the Netherlands.

Various public monuments composed of hard granite will have eroded one metre, in a moderate climate, assuming a rate of 1 Bubnoff unit (1 mm in 1,000 years, or ≈1 inch in 25,000 years).

Without maintenance, the Great Pyramid of Giza will erode into unrecognizability.

On the Moon, Neil Armstrong's "one small step" footprint at Tranquility Base will erode by this time, along with those left by all twelve Apollo moonwalkers, due to the accumulated effects of space weathering.

(Normal erosion processes active on Earth are not present due to the Moon's almost complete lack of atmosphere.)

Evolutionary biologist James W. Valentine predicted that if humanity has been dispersed among genetically isolated space colonies over this time, the galaxy will host an evolutionary radiation of multiple human species with a "diversity of form and adaptation that would astound us".

This would be a natural process of isolated populations, unrelated to potential deliberate genetic enhancement technologies.

The LAGEOS satellites' orbits will decay, and they will re-enter Earth's atmosphere, carrying with them a message to any far future descendants of humanity, and a map of the continents as they are expected to appear then.

, Review in Stanford Archaeology

Estimated time for an astroengineering project to alter the Earth's orbit, compensating for the Sun's rising brightness and outward migration of the habitable zone, accomplished by repeated asteroid gravity assists.

|

(30 quintillion – 3 sextillion)

.

"col" > |16px|link</h1>#Lists Date or years from now Event
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1,000 The SNAP-10A nuclear satellite, launched in 1965 to an orbit
3183 CE The Time Pyramid, a public art work started in 1993 at Wemding, Germany, is scheduled for completion. Conception
2,000 Maximum lifespan of the data films in Arctic World Archive, a repository which contains code of open source projects on GitHub along with other data of historical interests, if stored in optimum conditions.
6939 CE The Westinghouse Time Capsules from the years 1939 and 1964 are scheduled to be opened.
6970 CE The last Expo '70 Time Capsule from the year 1970, buried under a monument near Osaka Castle, Japan is scheduled to be opened.
28 May 8113 CE The Crypt of Civilization, a time capsule located at Oglethorpe University in Atlanta, Georgia, is scheduled to be opened after being sealed before World War II.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 10,000 Waste Isolation Pilot Plant, for nuclear weapons waste, is planned to be protected until this time, with a "Permanent Marker" system designed to warn off visitors through both multiple languages (the Official languages of the United Nations>six UN languages and Navajo) and through pictograms.
10,000 Long Now Foundation's several ongoing projects, including a 10,000-year clock known as the Clock of the Long Now, the Rosetta Project, and the Long Now Foundation>Long Bet Project.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt=Biology|Biology 10,000 Projected lifespan of Norway's Svalbard Global Seed Vault.
10,000 Most probable estimated lifespan of technological civilization, according to Frank Drake's original formulation of the Drake equation.
"background: #CEFF00;" > |16px|link</h1>#Lists|alt=Biology|Biology 10,000 If globalization trends lead to panmixia, human genetic variation will no longer be regionalized, as the effective population size will equal the actual population size.
"background: #e0ffff;" > |16px|link</h1>#Lists|alt=Mathematics|Mathematics 10,000 Human extinction>being extinct by this date, according to Brandon Carter's formulation of the controversial Doomsday argument, which argues that half of the humans who will ever have lived have probably already been born.
20,000 According to the glottochronology linguistic model of Morris Swadesh, future languages should retain just 1 out of 100 "core vocabulary" words on their Swadesh list compared to that of their current progenitors.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 24,000 The Chernobyl Exclusion Zone, the
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 24,110 Half-life of plutonium-239.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 25,000 Arecibo message, a collection of radio data transmitted on 16 November 1974, reaches the distance of its destination, the globular cluster Messier 13. This is the only List of interstellar radio messages>interstellar radio message sent to such a distant region of the galaxy. There will be a 24-light-year shift in the cluster's position in the galaxy during the time it takes the message to reach it, but as the cluster is 168 light-years in diameter, the message will still reach its destination.
14 September 30,828 CE Maximum system time for 64-bit NTFS-based Windows operating system.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 33,800 Pioneer 10 passes within 3.4 light-years of Ross 248.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 42,200 Voyager 2 passes within 1.7 light-years of Ross 248.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 44,100 Voyager 1 passes within 1.8 light-years of Gliese 445.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 46,600 Pioneer 11 passes within 1.9 light-years of Gliese 445.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 50,000 Estimated atmospheric lifetime of tetrafluoromethane, the most durable greenhouse gas.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 50,000 The KEO space time capsule, if it is launched, will reenter Earth's atmosphere.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 90,300 Pioneer 10 passes within 0.76 light-years of HIP 117795.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 100,000+ terraforming of Mars>terraform Mars with an oxygen-rich breathable atmosphere, using only plants with solar efficiency comparable to the biosphere currently found on Earth.
100,000 – 1 million Kardashev scale>harnessing all the energy of the galaxy, assuming a velocity of 10% the speed of light.
"background: #FFE4E1;" > |16px|link</h1>#Lists|alt=Particle physics|Particle physics 250,000 The estimated minimum time at which the spent plutonium stored at New Mexico's Waste Isolation Pilot Plant will cease to be radiologically lethal to humans.
13 September 275,760 CE Maximum system time for the JavaScript programming language.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 492,300 Voyager 1 passes within 1.3 light-years of HD 28343.
1 million Memory of Mankind (MOM) self storage-style repository in Hallstatt salt mine in Austria, which stores information on Clay tablet>inscribed tablets of stoneware.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 1 million Current glass objects in the environment will be decomposed.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1.2 million Pioneer 11 comes within 3 light-years of Delta Scuti.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 2 million Pioneer 10 passes near the bright star Aldebaran.'
"background: #CEFF00;" > |16px|link</h1>#Lists|alt=Biology|Biology 2 million Vertebrate species separated for this long will generally undergo allopatric speciation.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 4 million Pioneer 11 passes near one of the stars in the constellation Aquila >Aquila.
"background: #e0ffff;" > |16px|link</h1>#Lists|alt=Mathematics|Mathematics 7.8 million Humanity has a 95% probability of being extinct by this date, according to J. Richard Gott's formulation of the controversial Doomsday argument.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 7.2 million Without maintenance, Mount Rushmore will erode into unrecognizability.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 8 million Pioneer plaque>Pioneer 10 plaque, before the etching is destroyed by poorly understood interstellar erosion processes.
100 million Maximal estimated lifespan of technological civilization, according to Frank Drake's original formulation of the Drake equation.
"background: #f0dc82;" > |16px|link</h1>#Lists|alt=Geology and planetary science|Geology and planetary science 100 million Stratum" of fossilized port>great coastal cities, mostly through the remains of underground infrastructure such as building foundations and utility tunnels.
1 billion Molecular shuttle>Nanoshuttle memory device" using an iron nanoparticle moved as a molecular switch through a carbon nanotube, a technology developed at the University of California at Berkeley.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1 billion Estimated lifespan of the two Voyager Golden Records, before the information stored on them is rendered unrecoverable.
292,277,026,596 CE(292 billion) Numeric overflow in system time for 64-bit Unix systems.
"background: lavender;" > |16px|link</h1>#Lists|alt=Astronomy and astrophysics|Astronomy and astrophysics 1020 (100 quintillion) Estimated timescale for the Pioneer and Voyager spacecraft to collide with a star (or stellar remnant).
5D optical data storage>Superman memory crystal" data storage using femtosecond laser-etched nanostructures in glass, a technology developed at the University of Southampton, at an ambient temperature of

Graphical timelines

For graphical, logarithmic timelines of these events see: