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

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself ...

Scientists are now developing spinning space stations with artificial gravity that could take astronauts deeper into the ...

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

Those pesky space aliens are at it again ... or I should say, conspiracy theorists’ hopes, dreams, fantasies and wish fulfillment, along with a ...

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...