Cosmic Exploration · discovery
51 Pegasi b
1995 · Didier Queloz, Michel Mayor
- Year
- 1995
Description
A Jupiter-mass planet orbiting a Sun-like star every 4.2 days, far closer than any theory allowed. It was the first planet found around an ordinary star, and it broke planet formation models immediately.
Open on the Cosmic Exploration shelf — the interactive card, the filters, and everything alongside it.