Kepler 22b is an exoplanet orbiting the star Kepler-22, located about 600 light-years from Earth. It was discovered by NASA's Kepler Space Telescope in 2011 and is considered one of the first potentially habitable planets outside our solar system.
Kepler 22b is larger than Earth, and its exact composition is unknown. Scientists believe it could be rocky or covered in water.
It completes an orbit around its star in about 290 days, placing it within the habitable zone, where liquid water could exist.
The surface temperature of Kepler 22b is estimated to be around 22°C, similar to Earth's average temperature.