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For reference purposes, a shell of [evacuated] silica aerogel exactly 3 cm thick, around the entire planet, is about 4e12 m^3 and 4e12 kg. That's 1/369th the m
by logfromblammo 7y ago
For reference purposes, a shell of [evacuated] silica aerogel exactly 3 cm thick, around the entire planet, is about 4e12 m^3 and 4e12 kg.
That's 1/369th the mass of Deimos.
- anchpop 7y agoSuch a shell would not be stable and would crash into the planet almost immediately without a huge control system to keep it in place
- jonathlee 7y agoOf course you put supports under it. The point is the low amount of mass required.
- logfromblammo 7y agoYou just have to build another shield volcano antipodal to Olympus Mons.~