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 ...

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

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