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What do you mean? The earth is venting about 50,000 metric tons of mass per year. The addition of rare materials from space probably wouldn't match that. That's
by pitaj 10y ago
What do you mean? The earth is venting about 50,000 metric tons of mass per year. The addition of rare materials from space probably wouldn't match that. That's not even considering that the vast majority of materials would be used for space travel itself.
- andrewflnr 10y agoUm, what? If you're thinking about volcanism, I'm pretty sure none of that escapes earth. It doesn't change our total mass.
- neltnerb 10y agoFor comparison, human CO2 emissions are 10 billion metric tons per year. 50,000 tons is such a small amount that they're probably just referencing helium and other gases escaping the atmosphere.