51 Pegasi b
Exoplanet orbiting 51 Pegasi
51 Pegasi b
51 Pegasi b, officially named Dimidium (), is an extrasolar planet approximately 50 light-years (15 parsecs) away in the constellation Pegasus. Dimidium was the first exoplanet to be discovered orbiting a main-sequence star, the Sun-like 51 Pegasi — a major astronomical discovery. It is the prototype for a class of planets called hot Jupiters. In 2017, traces of water were discovered in the planet's atmosphere. In 2019, the Nobel Prize in Physics was awarded in part for the discovery of 51 Pegasi b.
Read on Wikipedia · Image ESO/M. Kornmesser/Nick Risinger (skysurvey.org), CC BY 4.0
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