Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House scientific advisory council on UFOs.

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

An illegal immigrant is on the run after he allegedly rammed his car into an ICE vehicle in Pennsylvania, prompting a federal agent to open fire during an arrest attempt.

From unforgettable classics to modern sci-fi hits, these Hollywood alien films have captivated audiences for decades.