Earth-sized planet found

Available for over a year

Jonathon Amos tells us about the discovery of an Earth-sized exoplanet which has been found to be orbiting our nearest star, Proxima Centauri. It is the closest Earth-sized exoplanet found to date - our astronomical next door neighbour, making this discovery arguably the most exciting exoplanet discovery to date. (Photo © ESO/M. Kornmesser, Artists impression of Proxima b (issued by the European Southern Observatory)