RT @ESO: Proxima Centauri is in the constellation of Centaurus but it’s too faint for the unaided eye. #PaleRedDot socsi.in/CIkKG
RT @ESO: Proxima Centauri is in the constellation of Centaurus but it’s too faint for the unaided eye. #PaleRedDot socsi.in/CIkKG