4 ms·

Humans living for more than months at a time in space or on another planet is a fantasy. The attempts will kill the participants. That is for machines or post-

• coolspot 4y ago
  Umm… https://www.nasa.gov/feature/jeff-williams-racks-up-new-time-in-space-record/ https://www.nasa.gov/feature/jeff-williams-racks-up-new-time...
  • nvahalik 4y ago
    Those days are spread out over the course of over a few trips over nearly a decade. Nowhere near to the amount of time you'd log on a trip to Mars and back.
    • AnimalMuppet 4y ago
      You don't think you could get to Mars and back in 520 days? Why not?
      • Zigurd 4y ago
        You could, at some cost to the health of astronauts. They won't die, right away, anyway. They will lose a lot of bone density, at a minimum. The other effects, like pooling of various bodily fluids, etc. will become both tiresome and more dangerous the longer they go on. They will get a lot of radiation. On ISS astronauts work out 2.5 hours per Earth day to control health problems. Training enough astronauts for frequent missions will be extremely difficult, maybe infeasible. Colonizing Mars is a fantasy.
    • idlewords 4y ago
      The radiation flux in low earth orbit is also much milder, about 1/4 what you would be exposed to en route to Mars.
• r3trohack3r 4y ago
  Staying home stops being viable in approximately 500m years, which is less than 25% of life on earth. A majority of the time life can survive on this planet is behind us. We’ve had 4.2bn years to figure out how to get off this rock. We’ve only got 500m left. In that time, life has printed exactly one golden ticket: humans. Staying here is deadly. The mentality that life on earth will be just fine dooms this planet to complete extinction.
  • moloch-hai 4y ago
    We will be extinct long before then. Our successors, if we survive long enough, won't need planets, and will not even bother. Everything of enduring value is out in the Kuiper Belt. Cold, most importantly.