NASA Symposium Marks 50-Year-Search for Signs of Life in Universe

You are invited to attend a NASA
symposium on Thursday, Oct. 14, from 9 a.m. - 4 p.m. EDT, where
world-renowned scientists will address past, present, and future
activities in the search for signs of life in the universe. Live coverage at:

http://www.livestream.com/astrobiology50th

Scientists from NASA and around the world are celebrating a half
century of astrobiology research. Astrobiology is the study of the
origin, evolution, distribution and future of life in the universe.
George Washington University in Washington consults with NASA in this
arena and helped organize the speakers for the symposium.

麻烦nngs翻译一下哦