Reply to post: Re: " Getting a sufficiently thick atmosphere would require"

Sorry, Neil Armstrong. Boffins say you may not have been first life-form to set foot on the Moon

cray74 Silver badge

Re: " Getting a sufficiently thick atmosphere would require"

And you also need to keep it there.... which would require a magnetic field as well to shield it from Sun energetic particles. Which also are not nice to life forms

An Earth-like atmosphere offers radiation shielding similar to about 10 meters of water, which will stop any electrons, protons, or x-rays from the Sun. With sufficient oxygen, it will also screen UV radiation, too.

That does leave the problem of solar wind erosion of the atmosphere, but Mars should be able to hold an Earth-like atmosphere for about 100 million years. That moves the issue of atmospheric erosion firmly into the category of "let the grand kids deal with it." ;)

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon

Biting the hand that feeds IT © 1998–2019