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More importantly, this sounds like planets tidally locked around a red dwarf. Red dwarfs are known for flares that would destroy the atmosphere of any nearby p

by chasil 4y ago

More importantly, this sounds like planets tidally locked around a red dwarf. Red dwarfs are known for flares that would destroy the atmosphere of any nearby planet. "Although this planet orbits very close to its star, at a distance about 10 times shorter than that of Mercury around our Sun, the amount of stellar irradiation it receives is still low... the star LP 890-9 is about 6.5 times smaller than the Sun and has a surface temperature half that of our star."

ncmncm 4y ago
In any case all its water would be locked up in ice on the night side.
- callamdelaney 4y ago
  If only we could invent a method to turn ice into water..
  - ncmncm 4y ago
    Needs heat. But that is all found thousands of km away.
    - dylan604 4y ago
      Just use mirrors strategically placed so that light can bounce around the horizon so solar can be used to melt the ice. Or orbit a giant mirror beaming that heat source down. The fact that you think thousands of km away is a hard limit just means you're not fully caffinated just yet.
      - ncmncm 4y ago
        If you are in orbit, why land on it at all? Surely there are construction materials and ice only light-minutes away and not so deep down a gravity well. God knows there is nothing else down there of any interest.
        dylan604 4y ago
        Which God knows this? Have you asked and been told this by said God? In which manner of appearance did God take when conversing said information to you: a burning bush or a 60' tall marshmallow icon?
        ncmncm 4y ago
        Both at once.
Razengan 4y ago
> More importantly, this sounds like planets tidally locked around a red dwarf. Live on the other side? or a narrow habitable band between the 2 hemispheres
- ncmncm 4y ago
  With exactly zero liquid water available? Not likely.
  - Razengan 4y ago
    I mean tidally-locked planets/moons in general. Both hemispheres would usually be extremes, but maybe with a “sweet spot” in between.
    - ncmncm 4y ago
      Only if your "sweet spot" has the sun always right at the horizon, and you don't mind mining all your water from the stuff frozen on the night side. You could pick a planet where the noonday sun is not too hot, but then the ice would be even further away. Noplace on Earth is so dry that people are tempted to collect ice from Antarctica, even with shipping today cheaper than it has ever been.

by chasil 4y ago

ncmncm 4y ago

In any case all its water would be locked up in ice on the night side.

callamdelaney 4y ago
If only we could invent a method to turn ice into water..
- ncmncm 4y ago
  Needs heat. But that is all found thousands of km away.
  - dylan604 4y ago
    Just use mirrors strategically placed so that light can bounce around the horizon so solar can be used to melt the ice. Or orbit a giant mirror beaming that heat source down. The fact that you think thousands of km away is a hard limit just means you're not fully caffinated just yet.
    - ncmncm 4y ago
      If you are in orbit, why land on it at all? Surely there are construction materials and ice only light-minutes away and not so deep down a gravity well. God knows there is nothing else down there of any interest.
      - dylan604 4y ago
        Which God knows this? Have you asked and been told this by said God? In which manner of appearance did God take when conversing said information to you: a burning bush or a 60' tall marshmallow icon?
        ncmncm 4y ago
        Both at once.

Razengan 4y ago

> More importantly, this sounds like planets tidally locked around a red dwarf. Live on the other side? or a narrow habitable band between the 2 hemispheres

ncmncm 4y ago
With exactly zero liquid water available? Not likely.
- Razengan 4y ago
  I mean tidally-locked planets/moons in general. Both hemispheres would usually be extremes, but maybe with a “sweet spot” in between.
  - ncmncm 4y ago
    Only if your "sweet spot" has the sun always right at the horizon, and you don't mind mining all your water from the stuff frozen on the night side. You could pick a planet where the noonday sun is not too hot, but then the ice would be even further away. Noplace on Earth is so dry that people are tempted to collect ice from Antarctica, even with shipping today cheaper than it has ever been.