![]() This infinite future allows for the occurrence of even massively improbable events, such as the formation of Boltzmann brains. 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. 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. This future situation may be similar to the white dwarf star MOA-2010-BLG-477L and the Jupiter-sized exoplanet orbiting it. ![]() 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. 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. Stars will eventually exhaust their supply of hydrogen fuel and burn out. ![]() See also: Formation and evolution of the Solar SystemĪll 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. 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. ![]() 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 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. 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. Artist's concept of the Earth 5–7 billion years from now, when the Sun has become a red giant.
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