17 August
1877: On 17 August 1877, the American astronomer Asaph Hall discovered Phobos, a moon of Mars. He also discovered the second moon of Mars, Deimos, in the same year.He named ...
27 FÉVR. 2004
Date de publication
1937
Vues
1999: On 18 August 1999, the NASA/ESA/ASI Cassini-Huygens spacecraft said goodbye to Earth as it completed a highly accurate pass by our planet and swung away towards its encounter with Saturn in 2004.
The Earth flyby gave the space probe a 5.5 km per second boost in speed, propelling it towards the ringed planet, more than 1000 million kilometres away.
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16 August
1920: On 16 August 1920, Sir Joseph Norman Lockyer died.Lockyer was a British astronomer who, in 1868, discovered and named the element helium that he found in the Sun's atmosphere. ...
15 August
1993: On 15 August 1993, after more than three years of efficient and successful operations, communications with ESA's scientific satellite Hipparcos were terminated.The Hipparcos satellite, a purely European undertaking, and ...
14 August
2003: On 14 August 2003, while the ESA SMART-1 spacecraft was on the launchpad in Kourou, French Guiana, the Flight Operations team at ESOC mission control in Damstadt, Germany, was ...
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