是发现外星人了吗?
到底是什麽东西会影响宇宙生　命?

http://www.nasa.gov/home/hqnews/2010/nov/HQ_M10-167_Astrobiology.html

"to discuss an astrobiology finding that will impact the search for evidence of extraterrestrial life. Astrobiology is the study of the origin, evolution, distribution and future of life in the universe.