Proxima Centauri had become a target for exoplanet searches already before the discovery of Proxima … See more

Proxima Centauri b is the closest exoplanet to Earth, at a distance of about 4.2 ly (1.3 parsecs). It orbits Proxima Centauri every 11.186 Earth days at a distance of about 0.049 AU, over 20 times closer to Proxima Centauri th… See more

Proxima b's parent star Proxima Centauri is a red dwarf, radiating only 0.005% of the amount of visible light that the Sun does and an average of about 0.17% of the Sun's energy. Despite this low radiation, due to its close orbit … See more

Proxima Centauri b is located within the classical habitable zone of its star and receives about 65% of Earth's irradiation. Its equilibrium temperature is estimated to be about 234 K (−39 °C; −38 °F). Various factors, suc… See more

In the context of exoplanet research, "habitability" is usually defined as the possibility that liquid water exists on the surface of a planet. As normally understood in the context of exoplanet life, liquid water on the surf… See more

As of 2021 , Proxima Centauri b has not yet been directly imaged, as its separation from Proxima Centauri is too small. It is unlikely to transit Proxima Centauri from Earth's perspective; all surveys have failed to find evidence fo… See more