7 January
1610: On 7 January 1610, Galileo wrote his first letter describing telescopic observations.
31 DÉC. 2003
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2869
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1942: On 8 January 1942, Stephen Hawking was born.
Hawking, an English theoretical physicist, has held since 1979 the position of Lucasian Professor of Mathematics at the University of Cambridge. The post was first held by Isaac Barrow, and then in 1669 by Isaac Newton.
He has made remarkable contributions to the field of cosmology (the study of the Universe as a whole) and his many publications include several popular books such as A Brief History of Time, Black Holes and most recently in 2001, The Universe in a Nutshell.
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1642: Galileo Galilei died on 8 January 1642.
Galileo was an Italian natural philosopher, astronomer, and mathematician who applied the new techniques of the scientific method to make significant discoveries in physics and astronomy.
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6 January
1998: On 6 January 1998, NASA launched Lunar Prospector, a satellite designed for a low-polar orbit investigation of the Moon.
5 January
1969: On 5 January 1969, the Soviet Venera 5 probe was launched towards Venus to obtain atmospheric data.
4 January
1958: On 4 January 1958, the Soviet Sputnik I satellite, the first man-made object to orbit Earth, fell back into the atmosphere and disintegrated, after 92 days in space.
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