Since this is a fairly hard science universe I can't really justify breathable atmospheres etc. ...
One proviso. Sufficiently big planetoids might have been terraformed (well, actually "aresformed") at some point in the past by the Thoth. The Thoth didn't have atomic energy so their powers would have been limited, but OTOH you wouldn't have to work as hard to make a planet only as habitable as even Weinbaum's Mars. However, I don't think that even the four biggies are big enough to hold an atmosphere by natural field very long, so they'd be only semi-habitable by now.
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Date: 2009-05-12 01:02 am (UTC)One proviso. Sufficiently big planetoids might have been terraformed (well, actually "aresformed") at some point in the past by the Thoth. The Thoth didn't have atomic energy so their powers would have been limited, but OTOH you wouldn't have to work as hard to make a planet only as habitable as even Weinbaum's Mars. However, I don't think that even the four biggies are big enough to hold an atmosphere by natural field very long, so they'd be only semi-habitable by now.