My suggestion has long been a viable, long term colony at the bottom of the Mari...

TulliusCicero · on Jan 16, 2022

Is that actually more hospitable than Mars? You can't breathe either place, but one has crushing pressure.

Mistletoe · on Jan 16, 2022

At least the trench doesn’t have radiation you have to shield yourself from constantly.

bruce511 · on Jan 16, 2022

Very true, but it also has no useful radiation, like, um, light.

But it does have water, lots of water, which could be useful in all sorts of ways.

Ultimately conditions are different enough to Mars to make knowledge gleaned from one to be useless in the other.

techdragon · on Jan 18, 2022

The most crucial difference being that on Mars your engineering to stop your air leaking OUT, while at the bottom of the trench you'd be engineering to stop the water getting IN. Which reminds me of this excellent Futurama joke...

Fry: How many atmospheres of pressure can the ship take?

Professor: Well it's a spaceship, so anywhere between 0 and 1.