Gliese 581 c is an exoplanet orbiting the red dwarf star Gliese 581, about twenty light-years from Earth in the constellation Libra. It was announced in April 2007 by a team of European astronomers led by Stephane Udry, who found it by measuring tiny variations in the star's motion with the HARPS spectrograph at the La Silla Observatory in Chile. The planet has a minimum mass about five times that of Earth and circles its star in about thirteen days. It was at first described as lying in the habitable zone, which raised hopes of liquid water, but later models suggested that it is probably too hot, with conditions similar to those on Venus. It remains one of the early examples of a small planet found around another star.
Before and after
- from 10 February 2007 to 4 November 2008Barack Obama presidential campaign, 2008
- from 5 March 2007 to 1 January 2025Premiere of Shaun the Sheep
- 9 March 2007Construction of Wembley Stadium
- from 2 April 2007 to 5 June 20072007 Ukrainian political crisis
- 4 April 2007Discovery of Gliese 581 c
- 16 April 2007Virginia Tech shooting
- 22 April 20072007 French presidential election
- 23 April 2007Death of Boris Yeltsin
- 24 April 2007Discovery of Gliese 581d
More in Universe & space
- 4 October 1957Launch of Sputnik 1
- 14 September 1974Discovery of Leda
- 28 July 1989Discovery of Galatea
- 15 May 2005Discovery of Hydra
- 10 September 2005Discovery of Dysnomia
- 19 January 2006Launch of New Horizons
The era
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