From the first photographer star to the discovery of alien worlds, these night sky targets mark some of astronomy's greatest ...

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

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

12 US scientists have gone missing or died. The mystery has become the talk - and worry - of Washington - The 12 scientists ...

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

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

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

Most of the individuals held top security clearance, with access to classified information on space missions, nuclear ...

They vanished mysteriously from their New Mexico homes within the last year, all four of them with ties to institutions tasked with aerospace research or nuclear weapons production — and they all ...

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

In the far southwest of Uganda, within shouting distance of its borders with Rwanda and Congo, lies one of the most ...

Lawmakers are demanding a probe into the mysterious disappearances and deaths of nearly a dozen top US scientists with ...