Scientists suggest the first alien signal we detect could be a desperate cry for help from a fading civilization.

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

In this scenario, our first contact with aliens would be tragic. We should look for "loud shouts in the night".

(Left to right) Author David Childress, researcher Jason Martell, investigative mythologist William Henry, ancient literature expert Ariel Tzadok, and "Ancient Aliens" producer Max Thompson on a panel ...