Space.com

What's Hot This Week December 2011 Skywatching Events by Geoff Gaherty, Starry Night Education Here's how to see a total lunar eclipse, as well as a show of stars and planets Could Natural Nuclear Reactors Have Boosted Life on This and Other Planets? Clara Moskowitz, Astrobiology Magazine There's evidence of at least one group of ancient nuclear reactors that arose spontaneously on Earth. Sponsored by: Clearest Enceladus Views Yet Nabbed by Cassini Radar Milky Way Shreds Dwarf Galaxy Into Four Star Streams