What are some of the best non-fiction books out there written by legitimate scientific authors (not psuedo-science) that discuss other galaxies, and specifically, solar/planetary systems outside of our own solar system? [more inside]
posted by jspierre on Jul 24, 2007 - 12 answers

Given our current state of technology and the world's nuclear armaments, I ask the question that the world needs an answer to: Could we destroy Mars? [more inside]
posted by TwelveTwo on Dec 24, 2005 - 41 answers