PSR B1257+12 d is one of the planets of the pulsar PSR B1257+12, and with its siblings it formed the first confirmed planetary system outside our own. The pulsar, a fast-spinning neutron star in the constellation Virgo, was observed by the Polish astronomer Aleksander Wolszczan and the Canadian Dale Frail using the Arecibo radio telescope, and they found that its pulses arrived at slightly irregular times, as they would if planets were pulling the star. The planets are small and may have formed from the debris after the supernova explosion that created the pulsar. Their discovery came before the first planet around a normal star was found, and they were later given the names Draugr, Poltergeist and Phobetor, the last being this one.
Before and after
- 1992Founding of National Stock Exchange of India
- 1992The first exoplanets are found around a pulsar
- from 11 January 1992 to 8 February 2002Algerian Civil War
- 22 January 1992Discovery of PSR B1257+12 c
- 22 January 1992Discovery of PSR B1257+12 d
- 5 February 1992Birth of Neymar
- 7 February 1992Maastricht Treaty
- 11 February 1992Founding of Central Bank of Azerbaijan
- 11 February 1992Birth of Taylor Lautner
More in Universe & space
- 1 May 1949Discovery of Nereid
- 20 August 1977Launch of Voyager 2
- 16 June 1989Discovery of Proteus
- 23 July 1995Discovery of Comet Hale-Bopp
- 15 May 2005Discovery of Nix
- 10 September 2005Discovery of Dysnomia
The era
This moment belongs to the Contemporary world (1945 CE to today), the world since 1945. You can also browse everything in the 20th century.