The seventh tranche of documents include investigative reports into three sightings of black, triangular objects.

Pentagon files describe a black triangular object near a US facility, with witnesses reporting unusual maneuvers and no heat ...

Some documents date back to the 1940s, 1950s and 1960s, but the most intriguing are from this year.

Some UFO movements look impossible at first glance, but motion can be surprisingly deceptive. The most interesting cases are ...

On Sept. 28, the spacecraft began to use its propulsion system nearly continuously, pausing just once each week to check in ...

Caltech graduate students and friends carry out their first rocket firing on Halloween, 1936, in a dry riverbed along which JPL would rise. Their work helped make possible missions such as ...

A new era of spaceflight could save astronauts time and cut exposure to cosmic radiation as they rocket to Mars—and beyond.

Jay Stratton never intended to spend a large part of his career making sense of alien encounters, but that changed when he ...

Japan launched a $578 million mission Monday on a five-year expedition to land on the largest moon of Mars and retrieve ...

It’s difficult to imagine a more daunting journey than one to an alien moon named after the Greek god of fear—especially when three other attempts to make that journey have failed. And yet, as Japan’s ...

A woman in Jalandhar, Punjab, was left puzzled after spotting something unusual in the sky. She pulled out her phone to ...

Space ETFs may offer an attractive entry point after recent selloffs, with a $686 billion global space economy and ...