Space.com #Aliens Next Door: Does Proxima b Host Life? 24 August 2016 fborgosano Leave a comment Share: Astronomers discovered the closest alien planet to Earth: Proxima b, a terrestrial world just over 4 light-years away. But it’s not clear if life exists there, or if scientists will be able to find it. from Space.com ift.tt/2c8aTzG Share: