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Detailed explanation-1: -Astronomers announced in August 2016 that they had detected an Earth-size planet orbiting Proxima Centauri . The planet, known as Proxima b, is about 1.3 times more massive than Earth, which suggests that the exoplanet is a rocky world, researchers said.

Detailed explanation-2: -Astronomers have discovered an Earth-like planet around Proxima Centauri, the closest star to the sun. Since 2000, a number of groups had found tantalizing hints of a planet around Proxima Centauri, but nothing conclusive.

Detailed explanation-3: -Proxima b is a super Earth exoplanet that orbits a M-type star. Its mass is 1.27 Earths, it takes 11.2 days to complete one orbit of its star, and is 0.0485 AU from its star. Its discovery was announced in 2016.

Detailed explanation-4: -Proxima Centauri has two known exoplanets and one candidate exoplanet: Proxima Centauri b, Proxima Centauri d and the disputed Proxima Centauri c. Proxima Centauri b orbits the star at a distance of roughly 0.05 AU (7.5 million km) with an orbital period of approximately 11.2 Earth days.

Detailed explanation-5: -Proxima Centauri b Proxima Centauri b is located just four light-years away from Earth, making it Earth’s closest known exoplanet, according to NASA Exoplanet Exploration.