Changes

'''Carl Sagan''' (1934-1996) was a professor of [[astronomy]] at [[Cornell University]] in Ithaca, New York who became a celebrity on television and a vocal advocate for increased searches for intelligent life in outer space.  Time magazine reported that Carl Sagan "talked with [[Jimmy Carter]] about such esoteric matters as [[black hole]]s and [[exobiology]] (the study of possible extraterrestrial life)."<ref>http://www.time.com/time/magazine/article/0,9171,951539,00.html</ref>

'''Carl Sagan''' (1934-1996) was a professor of [[astronomy]] at [[Cornell University]] in Ithaca, New York who became a celebrity on television and a vocal advocate for increased searches for intelligent life in outer space.  Time magazine reported that Carl Sagan "talked with [[Jimmy Carter]] about such esoteric matters as [[black hole]]s and [[exobiology]] (the study of possible extraterrestrial life)."<ref>http://www.time.com/time/magazine/article/0,9171,951539,00.html</ref>