On December 5, 2011, Kepler-22b’s discovery electrified the world ... In 2014, after analysis of downloaded data, Kepler-186f became the first planet the size of Earth to be discovered in ...
Tau Ceti e is about five times the mass of our planet. Until the discovery of Kepler-62f, Kepler-22b was the smallest planet, at 2.4 times the radius of Earth, to orbit a star like our sun within ...