Works at the Vatican Observatory...One of the Pope's personal astronomers, Author

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American astronomer, author, and writer who was the first person to convince the mainstream science that the Earth had once been hit by a planet sized body (Thea), creating both the moon and the Earth's 23° tilt. He also has an asteroid named after hi

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American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator in astronomy and natural sciences. Author. Host of the popular TV series Cosmos

Astrophysicist, planetary scientist. Leader of the New Horizons mission to the planet Pluto in 2015

Scientist; MIT; NASA. Principal investigator for the Gravity Recovery and Interior Laboratory (GRAIL) Mission (2011-2012); other planetary mission participation: NASA LRO, MRO, Dawn, NEAR, Mars Global Surveyor