Adams, John Couch (1819-1892), a British astronomer, one of the discoverers of the planet Neptune. From his study of the planet Uranus, Adams was able to calculate mathematically the existence of Neptune in 1845. Urbain Leverrier made the same discovery independently in 1846. Adams also determined the orbit of the Leonid meteors (swarms of meteors that appear each November) and studied the earth's magnetism and the moon's motions. Adams was professor of astronomy and geometry at Cambridge University, 1858-92.
He's ventured to the abyss of black holes, wagered on the information paradox and floated around in zero gravity. Meet the man, the legend, the super scientist: Stephen Hawking.
He is famous for a phrase he never said, for wearing turtlenecks and for hosting the original 'Cosmos' TV series. As enthusiastic about the stars as he was about marijuana, Carl Sagan led a very surprising life. Here are 10 cool facts.