4 ms·

Venus has the problem of spinning the wrong direction though. Nobody is going to want to live through either those days or those nights

by 8note 4y ago

hutzlibu 4y ago
And the bigger problem, that a day lasts 243 earth days. The only thing venus has, that makes it interesting for human settlements, is earthlike gravity - but the rest is pretty hell like.
- saalweachter 4y ago
  To be fair, the gravity thing is pretty hard to fix. You can imagine putting rotating sunshield/mirrors into orbit to fix the day/night/temperature problem, but mass is mass. The Earth weighs more than everything else between the sun and Jupiter combined, and Venus is 80% of that.
  - hutzlibu 4y ago
    I think Venus gravity is actually fine enough and not in need of fixing. (Old people would probably love it) But yes, I also see no way of "fixing" the g of mars(which is likely way too low for humans), unless we go into the buisness of planet building.
    - cnlevy 4y ago
      > which is likely way too low for humans We don't really have a way to know until we get experimental data (real humans on Mars). Until then, it's all just (un)educated guesses.
      - hutzlibu 4y ago
        "Until then, it's all just (un)educated guesses. " We know that long time weightlessness causes damage, so 38% of earths gravity will likely have some bad effect, too. This is not just wildly speculating. But yes, for finding out, whether humans still can bear it, we will have to find out and there is no shortage of volunteers.
- mcdonje 4y ago
  Hit it with mercury. Get the speed and angle right, and you'll speed up the rotation, increase the gravity, and give it a moon.
  - throwayyy479087 4y ago
    Also that would be awesome.
    - hutzlibu 4y ago
      Untill the changed gravity pulls the earth more close or further away from the sun, than we will like. Seriously, the circeling of the planets are interconnected and any big change to that, will have effects on earths year length and distance to the sun. But on the other hand, if we would have the tech to "move" mercury around, we probably could also adjust earths rotation. In either way, this is nothing remotely realistically with current state of the art.
      - adastra22 4y ago
        Only on the scale of millions of years.
        hutzlibu 4y ago
        From the little weight alone under normal circumstances, yes, but when the whole system becomes chaotically unstable, then unpleasant changes can happen fast.
  - at_a_remove 4y ago
    That comes later. First you want to get your self-replicating probes occupying the Oort cloud, whatever. Get ready to sort and aim. You start with your "rocky" bodies, skipping them off of Venus' atmosphere, just ripping it off in big hunks, until you're down to about one Earth atmosphere. Next, you flat up drop your icy bodies into Venus, because it really needs water. During that time you'll want to start constructing your insolation shield, to help cool things down. Only after that can you move Mercury into place.

Venus has the problem of spinning the wrong direction though. Nobody is going to want to live through either those days or those nights

by 8note 4y ago

Venus has the problem of spinning the wrong direction though. Nobody is going to want to live through either those days or those nights

hutzlibu 4y ago

And the bigger problem, that a day lasts 243 earth days. The only thing venus has, that makes it interesting for human settlements, is earthlike gravity - but the rest is pretty hell like.

saalweachter 4y ago
To be fair, the gravity thing is pretty hard to fix. You can imagine putting rotating sunshield/mirrors into orbit to fix the day/night/temperature problem, but mass is mass. The Earth weighs more than everything else between the sun and Jupiter combined, and Venus is 80% of that.
- hutzlibu 4y ago
  I think Venus gravity is actually fine enough and not in need of fixing. (Old people would probably love it) But yes, I also see no way of "fixing" the g of mars(which is likely way too low for humans), unless we go into the buisness of planet building.
  - cnlevy 4y ago
    > which is likely way too low for humans We don't really have a way to know until we get experimental data (real humans on Mars). Until then, it's all just (un)educated guesses.
    - hutzlibu 4y ago
      "Until then, it's all just (un)educated guesses. " We know that long time weightlessness causes damage, so 38% of earths gravity will likely have some bad effect, too. This is not just wildly speculating. But yes, for finding out, whether humans still can bear it, we will have to find out and there is no shortage of volunteers.
mcdonje 4y ago
Hit it with mercury. Get the speed and angle right, and you'll speed up the rotation, increase the gravity, and give it a moon.
- throwayyy479087 4y ago
  Also that would be awesome.
  - hutzlibu 4y ago
    Untill the changed gravity pulls the earth more close or further away from the sun, than we will like. Seriously, the circeling of the planets are interconnected and any big change to that, will have effects on earths year length and distance to the sun. But on the other hand, if we would have the tech to "move" mercury around, we probably could also adjust earths rotation. In either way, this is nothing remotely realistically with current state of the art.
    - adastra22 4y ago
      Only on the scale of millions of years.
      - hutzlibu 4y ago
        From the little weight alone under normal circumstances, yes, but when the whole system becomes chaotically unstable, then unpleasant changes can happen fast.
- at_a_remove 4y ago
  That comes later. First you want to get your self-replicating probes occupying the Oort cloud, whatever. Get ready to sort and aim. You start with your "rocky" bodies, skipping them off of Venus' atmosphere, just ripping it off in big hunks, until you're down to about one Earth atmosphere. Next, you flat up drop your icy bodies into Venus, because it really needs water. During that time you'll want to start constructing your insolation shield, to help cool things down. Only after that can you move Mercury into place.