When we imagine alien life, we picture monsters, insects, or tentacles—but what if the most realistic aliens are human-like?

The truth about aliens may be out there, but don't expect them to look like little green men, RadarOnline.com can report. Extraterrestrial experts are trying to temper expectations and predictions ...

Neil deGrasse Tyson is an astrophysicist who is the director of the Hayden Planetarium at the American Museum of Natural ...