The Russian Space Agency Roscosmos insists these are unlikely to have come from Earth and are almost certainly extra-terrestrial in origin. It has led to British space scientists reiterating claims that not only does life exist on other planets but that alien beings are continually coming to Earth from space. The discovery is being hailed as near cast-iron proof of the existence of aliens in sensational developments set to change global opinion on the existence of life outside Earth. Do these Aliens really on earth? I wish to see one physically.