Why do they need the lava tube?
No sunlight there?
Also, they looked weak and under equipped. So how did getting into the very difficult hole suddenly save them, I don't get it?
No sunlight there?
Also, they looked weak and under equipped. So how did getting into the very difficult hole suddenly save them, I don't get it?
Shelter and access to water ice. http://www.nationalgeographic.com/magazine/2016/11/spacex-elon-musk-exploring-mars-planets-space-science/ The shelter explanation is near the bottom of the article.
Protection from cosmic radiation.
Schrodinger's cat walks into a bar and doesn't.
I think the point was long term radiation exposure.
Mars does not have either the gravity or the magnetic field Earth does,
so radiation is much stronger on Mars.
But it looked like a pretty crappy existence.
What we do day after day to our own planet is sickening.
We don't deserve to move out into space.
* Access to Water Ice
* Protection from radiation
* Protection from small and micro-meteorites (very thin atmosphere means these hit the ground rather than burn up like on Earth, real risk of punctures/holes in equipment/habitat.