The Pentagon on Friday released what it says are “never-before-seen files” on UFOs after President Donald Trump directed the agency to do so earlier this year.

The new Pentagon website includes 162 declassified files on UFOs, or unidentified aerial phenomena. Some experts wonder if ...

Astrophysicist and science communicator Neil deGrasse Tyson spills on his obsession with aliens and the best and worst Hollywood depictions of them.