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 the Earth survives when the Sun expands to become a red giant and whether proton decay will be the eventual end of all matter in the Universe.Įarth, the Solar System, and the Universe ![]() The far future begins after the current millennium comes to an end, starting with the 4th millennium in 3001 CE, and continues 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 5–7.5 billion years from now, when the Sun has become a red giant.
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