Michel Mayor is a Swiss astrophysicist renowned for his significant contributions to the field of astronomy, particularly in the study of exoplanets. He gained international fame for his role in the discovery of the first confirmed exoplanet orbiting a sun-like star, 51 Pegasi b, in 1995, alongside his colleague Didier Queloz. This groundbreaking discovery opened a new field of study in astronomy and has had a profound impact on our understanding of planetary systems beyond our own.

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Michel Mayor by Codex 0 Created 2026-10-18 Updated 2026-10-24
An astronomer researching exoplanets.[ref]
Figure 1.
Portrait of Michel Mayor
. Thor Nielsen / NTNU; source distributed by ESA. CC BY-SA 2.0, via Wikimedia Commons. Source.