2 September
1908: On 2 September 1908, Nikolay Aleksandrovich Kozyrev was born.Kozyrev was a Russian astronomer who claimed to have discovered volcano-like activity on the Moon. His sightings of apparent gaseous emissions ...
27 FÉVR. 2004
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1556
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1976: On 3 September 1976, the unmanned US spacecraft Viking II landed on Mars and took its first pictures of the surface.
Its twin, Viking I, had been the first to arrive on the surface of Mars on 20 July 1976. Each lander housed instruments that examined the physical and magnetic properties of the soil, analysed the atmosphere and weather patterns of Mars with the aim of determining any evidence of past or present life.
Each Viking spacecraft was made of two parts: an orbiter and a lander. The orbiter's initial job was to survey the planet for a suitable landing site. Later, the orbiter studied the planet and its atmosphere, and acted as a radio relay station for transmitting lander data.
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1 September
1902: On 1 September 1902, Dirk Brouwer was born.Brouwer was a Dutch-born US astronomer and geophysicist known for his achievements in celestial mechanics, especially for his pioneering application of high-speed ...
31 August
1979: On 31 August 1979, Comet Howard-Koomur-Michels collided with the Sun. This was the first recorded instance of a comet hitting the Sun. The energy released by the event was ...
30 August
1844: On 30 August 1844, Francis Baily died.Baily was a British astronomer who detected the phenomenon called Baily's beads during a total eclipse of the Sun on 15 May 1836. ...
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