Didier Queloz

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Didier Queloz, 2012

Didier Patrick Queloz (born February 23, 1966 ) is a Swiss astronomer . In 1995, together with Michel Mayor , he discovered the first extrasolar planet orbiting a sun-like star ( 51 Pegasi b ), for which both received the Nobel Prize in Physics in 2019 .


Didier Queloz graduated from the University of Geneva with a master's degree in physics in 1990 and received his PhD in astronomy there in 1995 ( Ph.D. ) with Michel Mayor . He has been Professor of Physics at the Cavendish Laboratory at Cambridge University and at the University of Geneva since 2013 .

The discovery of the extrasolar planet, together with Michel Mayor, is based on measurements of the radial velocity according to the Doppler effect , the first planet found had an orbital velocity of 4.2 days. On July 23, 2015, Queloz announced the first discovery of an Earth-like planet, Kepler-452b , to NASA . This was also referred to as "second earth" or "older cousin of the earth".

He was involved in the discovery of the first extrasolar planet in orbit around a sun-like star in 1995 - 51 Pegasi b .

Since 2013, Thomson Reuters has counted Queloz among the favorites for a Nobel Prize ( Thomson Reuters Citation Laureates ) due to the number of its citations . He received the Nobel Prize in 2019.

Awards and honors

Web links

Commons : Didier Queloz  - collection of images, videos and audio files

Individual evidence

  1. Mayor, Queloz: A Jupiter-mass companion to a solar-type star , Nature, Volume 378, 1995, pp. 355-359; doi : 10.1038 / 378355a0
  2. 2013 Predictions at Thomson Reuters (sciencewatch.com); Retrieved September 25, 2013
  3. SPG prices 1991–2005 , sps.ch
  4. Minor Planet Circ. 66244