SpaceX’s classified military satellites, part of the Starshield network, have been detected emitting a mysterious signal that ...

A Canadian space enthusiast has uncovered what appears to be a classified group of SpaceX satellites transmitting on frequencies typically reserved for a different purpose.

NASA discovered Camp Century, a Cold War U.S. military base buried under Greenland’s ice that was built for a secret missile ...

The US Space Force’s classified spacecraft, the X-37B, has safely returned to Earth after an awe-inspiring 434 days in orbit. This record-breaking mission has led to a whirl of speculation and ...

Joseph Silk, a professor of physics and astronomy at Johns Hopkins, believes the elusive glow could be proof of dark matter ...