Astrophysicist Neil deGrasse Tyson, 67, explained how any alien visitor from another planet would likely look very different from humans and may not even share the same DNA structure.

Dr. Hal Puthoff claims the U.S. has recovered remains of four separate species of alien life from UFOs, citing people involved in the recoveries.

The X-Men are officially meeting the deadliest aliens in the universe in a crossover that'll make superhero and horror fans alike quiver.

These wildly different films explore the wondrous, and sometimes terrifying possibilities of contacting extra-terrestrial life.

Chris Smith’s three-part HBO docuseries “Bring Me the Beauties,” premiering June 1, tells the chilling true story of the Eternal Values doomsday cult.