Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

NASA's SPHEREx space telescope reveals widespread water ice in Cygnus X, showing how dust shields molecules in star-forming ...

The 12 scientists who have died or gone missing all appeared to have ties to nuclear or space programs and, in some cases, ...

Multiple scientists tied to U.S. military and defense research have disappeared or died, prompting questions about whether a ...

The string of cases has fueled online speculation and drawn attention from Congress, federal agencies and President Trump.

The disappearances and deaths of 10 government workers tied to nuclear or space technology have sparked speculation online.

The FBI said Monday that it would lead an effort to hunt for any possible connections between the seemingly unrelated deaths ...

The latest strike to hit Germany's flagship carrier hails from the cabin crew union UFO. Meanwhile, Berlin is walking back a contentious plan about young men seeking permission to go abroad for long ...

FBI investigating possible links between 10 missing or deceased scientists tied to sensitive US nuclear and space ...

At least 10 scientists tied to sensitive U.S. research have died or disappeared in recent years, sparking a federal ...

Remember that big cosmic smash-up we talked about a while back? The one involving two neutron stars? Well, scientists think ...