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1 vote

Titan vs Mars for colonization

As for economics model, Titan has to be better because of the resources that can de exploited (hydrocarbons) while in Mars its not too clear what can be industrialized or exploited over there besides ...
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3 votes

How could space-manufactured goods be transported to earth surface?

This answer is from a worldbuilding perspective, so take this answer with a grain of salt. Given that ISRU and production of various objects is decently advanced, the export industry should be able to ...
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28 votes

Does the debris from the re-entry of Long March core stage ever reach the surface?

is it possible for the debris [of the Long March core stage] to hit earth's surface and possibly cause considerable damage to inhabited areas? Yes. Not only is it possible, but it has actually ...
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2 votes
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Could dust kicked up from the Apollo landings reach Earth intact?

Short answer: No Long answer: The escape velocity of the moon is about 2.4km per second. The exhaust velocity of the of the LEM’s engines were about 3km per second. At first you might say “well that’s ...
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