Re: Minimum density and gravity for inhabitable world

On Jul 27, 8:32 am, Crown-Horned Snorkack <chornedsnork...@xxxxxxx>
wrote:

I thought it was "Crumble-horned"?

If we want a body (a planet, a moon of a giant) with small
gravitational attraction, breathable air, liquid water AND at least
some land, what would the minimum density and gravity be?

You need to specify timescale here as wll. Calculations have shown
that our Moon could support a breathable atmosphere for something like
1 to 10 million years, so terraforming is (surprisingly) not out of
the question.

Mars, colder than Earth, has rather thinnish atmosphere.

Give it a thicker atmosphere, and you wamr it up as wll as move it
toward breathability (while not really increasing the loss rate
substantially - the exosphere temperature might not move up much,
certainly not as much as the ground temperature).

Could you have intrinsically less dense rocks than what
Moon consists of?

Not, I think, in a realistic (i.e., natural) world.

--
Brian Davis


.

Relevant Pages

  • Re: Minimum density and gravity for inhabitable world
    ... gravitational attraction, breathable air, liquid water AND at least ... Give it a thicker atmosphere, and you wamr it up as wll as move it ... toward breathability (while not really increasing the loss rate ... Making the atmosphere thicker won't do much to the exosphere temperature, ...
    (rec.arts.sf.science)
  • Re: Minimum density and gravity for inhabitable world
    ... that our Moon could support a breathable atmosphere for something like ... toward breathability (while not really increasing the loss rate ... Earth has oxygen/carbon ... A comfortably breathable atmosphere should hold at least 150 mbar ...
    (rec.arts.sf.science)