Proxima Centauri b

Proxima Centauri b is an extrasolar planet orbiting Proxima Centauri, the closest star to our Sun. Discovered in 2016, it is estimated to have about 17% more mass than Earth, suggesting it is likely a rocky planet. Proxima Centauri b orbits within its star's habitable zone, the region where liquid water could exist on a planet's surface, a key condition for supporting life.12

However, due to its close proximity to Proxima Centauri, a red dwarf star known for frequent and powerful solar flares, Proxima Centauri b may be tidally locked and unlikely to retain an atmosphere. These conditions raise questions about its potential to support life. Two other planets, Proxima Centauri c and d, are also thought to orbit this star, but they lie outside the habitable zone.12