William Kenneth Hartmann
William K. Hartmann | |
|---|---|
Hartmann being interviewed in 1998 | |
| Born | June 6, 1939 |
| Alma mater | Pennsylvania State University University of Arizona |
| Awards | G.K. Gilbert Award, Carl Sagan Medal for Excellence in Public Communication in Planetary Science |
| Scientific career | |
| Fields | Planetary science |
| Institutions | Planetary Science Institute |
William Kenneth Hartmann (born June 6, 1939) 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.