Some say an alien civilization existed before mankind was born on planet Earth. Other say aliens from another planet come on Earth and helped mankind to be born. They believe those aliens come to Earth from time to time, keeping a track on how humans are progressing, looming over us like gods. Here are, unknown to most of us, such alien races in contact with earth:
10. Grays
The Gray’s come from a star-system known as Zeti Reticuli which is a star system located somewhere in the southern celestial hemisphere and are thought to be one of the alien races in contact with earth. At a little over 40 light-years away they’re practically our closest neighbors ... Read even more
