26 June
1730: On 26 June 1730, Charles Messier was born.Messier was a French astronomer who discovered fifteen comets. He was the first to compile a systematic catalogue of 'M objects.' - ...
27 HELMI. 2004
Julkaisupäivä
1521
Katselukerrat
1767: On 27 June 1767, Alexis Bouvard was born.
Bouvard was a French astronomer and director of the Observatoire de Paris, who is noted for discovering eight comets and writing Tables astronomiques of Jupiter and Saturn (1808), and of Uranus (1821).
Bouvard's tables accurately predicted orbital locations of Jupiter and Saturn, but his tables for Uranus failed, leading him to hypothesise that irregularities were caused by an unknown perturbing body.
This spurred observations leading to the discovery of Neptune by Adams and Leverrier.
Mediamodaali
25 June
1998: On 25 June 1998, during routine maintenance operations, ground controllers lost contact with the ESA/NASA SOHO spacecraft. The satellite went into Emergency Sun Re-acquisition (ESR) mode. The ESR mode ...
24 June
1975: On 24 June 1975 a Moon tremor, detected by the Lunar Seismic Network, was caused by a strike of Taurid meteors. Seismometers had been left on the Moon's surface ...
23 June
1901: On 23 June 1901, Otto Heckmann was born.Heckmann was a German astronomer noted for measuring stellar positions and his studies of relativity and cosmology. He also made notable contributions ...
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