• 12000:
  - earliest possible date for the next glacial period (aka "ice age") to begin


• 50000:
  - the approximate length of time for the west antarctic ice sheet to be eliminated


• 80000:
  - the end of the holocene epoch


• 100000:
  - the time it will take for Mount Everest to erode to sea level


• 500000:
  - the estimated time for the earth's core temperature to drop 1000 degree celsius


• 1000000:
  - the approximate time it will take for the earth's surface to erode one kilometer


• 30000000:
  - the year by which mars' moon phobos will make impact with the surface of mars


• 50000000:
  - africa will collide with eurasia, closing the Mediterranean basin


• 250000000:
  - supercontinent formation; "Pangaea Ultima"


• 750000000:
  - estimated time for earth's oceans to disappear


• 1000000000:
  - the era of multicellular life on earth will have ended
  - the sun's luminosity will be 10% higher than today


• 4000000000:
  - earliest point at which the andromeda galaxy and the milky way will collide


• 5000000000:
  - the sun's luminosity will have risen to 100 times its current value
  - the sun will have depleted its hydrogen


• 10000000000:
  - the sun will reach its maximum size and become a red giant


• 20000000000:
  - the sun will have faded away into a white dwarf, marking the end of the solar system


• 30000000000:
  - the earliest estimated date for the universe to become too dark to be habitable


• 40000000000:
  - the estimated time for the universe to expand to the point where it is no longer visible


• 60000000000:
  - the estimated time for the universe to become too dark for stars to form


• 70000000000:
  - the estimated time for the universe to become too dark for galaxies to form


• 80000000000:
  - the estimated time for the universe to become too dark for life to exist

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