William Kenneth Hartmann ✓
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William Kenneth Hartmann (born 1939) was a United States science fiction writer, known for Moons and planets / William K. Hartmann. - 1972.
About William Kenneth Hartmann
William Kenneth Hartmann is an American planetary scientist, artist, author, and writer. He was the first to convince the scientific mainstream that the Earth had once been hit by a planet sized body (Theia), creating both the Moon and the Earth's 23.5° tilt.
Moons and planets / William K. Hartmann. - 1972
G. K. Gilbert Award|Barringer Medal|Carl Sagan Medal for Excellence in Public Communication in Planetary Science|Fellow of the American Association for the Advancement of Science|Eugene Shoemaker Distinguished Scientist Medal
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