> For all intents and purposes that's excessive. certainly neither one has even the pressure to keep a human alive for any amount of time. mars has got terato

> For all intents and purposes that's excessive. certainly neither one has even the pressure to keep a human alive for any amount of time. mars has got teratons of carbon dioxide, which is useful stuff. little bits of some other handy gases. the moon has got 10 tons of atmosphere, total.