Carl Sagan
Astronomers
Scientists, biography
Science & Technology
Astronauts
Biografie
United states, biography
Astronomy
BIOGRAPHY & AUTOBIOGRAPHY
Biographies
Science
Biography
"Carl Sagan was one of the most celebrated scientists of his time - the leading visionary of the Space Age. He was also a highly controversial figure who inspired wildly opposed opinions. His enthusiasm and eloquence about the wonders of space, the marvels of the human brain, and the mysteries of li…
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