If and when SETI discovers alien life, a revised Declaration of Principles guarantees once the discovery has been verified, ...

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

How Andy Nicholson and Jonathan Rothbart mixed the old with the new for FX's big-budget horror series "Alien: Earth" ...

Scientists and NASA officials insist the object is a natural comet, not alien technology. Recent observations found no radio signals from the comet that would suggest it was artificial. The comet made ...

In a world easily startled by sensationalism, Tyson offers a cool, gentle voice of reason amid the unchecked fascination with alien visitation.