Immigration officials have wrapped up a sweep in Maine that netted hundreds of suspected illegal aliens in recent days ...

High-energy particles zipping through the cosmos are harmful to life on Earth, but scientists think it could be food for potential alien life elsewhere. Saturn's moon Enceladus (shown here in a 2006 ...

Chief District Judge Patrick Schiltz said the agency has repeatedly violated orders to release detainees.

New theoretical models have strengthened the case that immense, energy-harvesting structures orbiting their host stars could ...

In a written statement Monday, a spokesperson characterized those arrested as "illegal aliens." But in many cases, ...

Kristi Noem is under pressure over the deadly clashes between federal immigration enforcement officers and protesters.

Quite a bit of movie magic made "Alien" the sci-fi horror classic it is -- but one of its biggest challenges was solved with ...

Federal-state clash erupts as Trump officials criticize Tim Walz over immigration enforcement policies. Governor demands ...

Sputnik skies to analysis of interstellar visitors, scientists are rethinking how and where to look for physical traces of ...

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The search for life beyond our solar system heated up this year when scientists reported a tantalising signal from an exoplanet of a molecule that is known to be produced exclusively by life on Earth.