To what extent would the lack of an atmosphere reduce the effectiveness of nuclear weapons?
posted by Artw on Sep 26, 2008 - 17 answers

How could someone avoid burning up in the atmosphere while falling to Earth from orbit? [more inside]
posted by clockzero on Feb 6, 2007 - 20 answers

What would happen if someone were to build a tunnel or tube into space? (Description inside...) [more inside]
posted by punkbitch on Jan 20, 2005 - 10 answers

The smell of space. How and why? [much more... out there.] [more inside]
posted by stonerose on Jan 28, 2004 - 11 answers