Gliese 581d is a planet candidate reported to orbit the red dwarf star Gliese 581, about twenty light-years from the Sun in the constellation Libra. It was found by a European team using the radial velocity method with the HARPS spectrograph in Chile, and for some time it was regarded as one of the most promising candidates for a habitable world, since it might lie near the outer edge of the star's habitable zone. Later studies questioned whether the signal came from a planet or from stellar activity, and the planet's existence is disputed. The Gliese 581 system has had a complex history of claimed and refuted planets.
Before and after
- 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
- 25 May 2007Release of Google Street View
- June 2007Shut Up and Drive
- from 15 June 2007 to 19 June 2007Battle of Chora
- 19 June 2007When You're Gone
More in Universe & space
- 22 October 1969Discovery of 67P/Churyumov–Gerasimenko
- 30 September 1975Discovery of Themisto
- 24 May 1981Discovery of Larissa
- 22 August 1981Discovery of Pan
- 18 September 1989Discovery of Naiad
- 26 June 2012Discovery of Styx
The era
This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 21st century.