Free Astronomy Magazine July-August 2020

4 EXOPLANETS In the habitable zone of the Proxima Centauri system, the existence of an orbiting Earth-sized planet, Proxima b, is now certain. Some studies have recently suggested the presence of a super-Earth in an outer orbit, and there may even be a third planet smaller than ours in an inner orbit. The observations of the star closest to the Sun are proving to be much more interesting than expected. All the planets of Proxima Centauri by Michele Ferrara revised by Damian G. Allis NASA Solar System Ambassador JULY-AUGUST 2020