[nickt]

That’s why in non-American English it’s called earth. :)

I had no idea. Hackaday explains as well as some other things I’d not though about.

https://hackaday.com/2017/08/17/living-on-mars-the-stuff-you...

[interestica]

Crazy. I just presumed the planet acts as a ground. Presumably same challenge on the moon?

[godelski]

> Presumably same challenge on the moon?

Yes. It will be true for any planetary body that does not have a magnetosphere. But Venus has a magnetosphere. So you can do the old "stick a fucking metal rod into the ground" trick as long as your metal rod doesn't melt... because Venus.

[godelski]

Like you call the ground earth or you call ground earth? I fail to see how earth is less ambiguous.

[Rule35]

Presumably every (non-gaseous) planet is covered with ground. Whereas Earth isn't Mars.