TRAPPIST-1 - Wikipedia
en.wikipedia.org

(it’s not a solar system because Sol is our star, specifically; we’re the only Solar system)

TRAPPIST-1 is a cool red dwarf star[c] with seven known exoplanets.

Up to four of the planets – designated d, e, f and g – orbit at distances where temperatures are suitable for the existence of liquid water, and are thus potentially hospitable to life.

The red dwarf star TRAPPIST-1 has an estimated lifespan of pretty much the entire lifespan of the universe. If any of those planets are habitable, and humanity goes there, we could live there until the end of the whole universe, no worrying about our sun going out in about 5 billion years. It could be our forever home.

The planets in the TRAPPIST system are extremely close to each other, so the night sky on any of them would be awe-inspiring, with multiple bodies bigger than our moon rising and setting every night.

  • CryophiliaOPEnglish
    71·
    4 months ago

    I don’t like the idea of a tenuous bunch of satellites keeping an atmosphere in play. Relying on technology to keep atmosphere on a planet sounds super risky. Like if we wanted to live in such a place, we’d live on a space station. Planets are supposed to be safe and solid.

    The current theory is if we grab a few asteroids and hit mars just right, we can speed up its rotation enough to restart the dynamo. Sounds way cheaper than a permanent planetwide shield.

    • SorteKaninEnglish
      70·
      4 months ago

      keep atmosphere on a planet sounds super risky

      Does it though? I imagine that even if the system malfunctioned, the atmosphere would not disappear overnight. It would likely take a long time for the atmosphere to be affected significantly, which should give plenty of time to repair the system.

      • CryophiliaOPEnglish
        51·
        4 months ago

        Maybe, but I don’t trust generations to consistently maintain it. I’d rather a self-correcting natural process.

        • SolemnEnglish
          20·
          4 months ago

          Mars is an example of why the natural process isn’t exactly reliable either… You can engineer things to be as durable as planets, there’s just generally not much demand for a project to be that costly in resources. In this case, I’m pretty sure making an artificial magnetic field that’s more durable than the natural one would also be cheaper than recreating the natural one.