20 July
1969: On 20 July 1969, US astronaut Neil A. Armstrong became the first human to set foot on the Moon.As Commander of the Apollo 11 mission, he stepped from the ...
27 ΦΕΒ. 2004
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1620: On 21 July 1620, Jean Picard was born.
Picard is regarded as the founder of modern astronomy in France. He introduced new methods, improved the old instruments and added new devices, such as Huygens's pendulum clock to record times and time intervals.
Picard was also the first to put the telescope to use for the accurate measurement of small angles.
His most important work was the first measurement of the circumference of Earth.
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19 July
1846: On 19 July 1846, Edward Pickering was born.Pickering was an American physicist and astronomer. He directed the Harvard College Observatory for forty-two years. He and his staff made visual ...
18 July
1997: On 18 July 1997, Gene Shoemaker died.Shoemaker was an American planetary geologist. Shoemaker initiated and promoted the geology studies of American astronauts that made them able scientific observers and ...
17 July
1894: On 17 July 1894, Georges Lemaître was born.Lemaître was a Belgian astronomer and cosmologist, born in Charleroi, Belgium. He was also a civil engineer, army officer and ordained priest. ...
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