Timeline of the far future

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. 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 will therefore not collapse in on itself after a finite time. This infinite future could allow for the occurrence of massively improbable events, such as the formation of Boltzmann brains or spontaneous inflation triggering a new Big Bang. Keys == Humanity and human constructs ==

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