Most space missions rely on chemical rockets for propulsion. Rockets must carry fuel, which increases spacecraft mass and limits their speed and travel distance. For decades, researchers have explored ...

Government officials have said little about Trump’s most recent social media post on the matter. The president cited “tremendous interest” in the files, whatever they might contain. Perhaps the most ...

New details have emerged in the disappearance of a retired US Air Force general linked to secret UFO programs as the FBI ...

A computer expert pulled off the 'biggest military computer hack of all time,' breaching NASA's system to find what he said ...

There is a silence in the night sky that has bothered me for as long as I can remember. ” That observation, attributed to ...

As engineers work to fix issues with the Artemis 2 mission's Space Launch System (SLS) rocket, NASA officials are reexamining what flights will follow and are shaking up plans for ...

The Mystery Wire is releasing more documents obtained from the Cold War era USSR about the country's investigations into ...

Hypersonic vehicles travel at least five times faster than the speed of sound. They also tend to be highly maneuverable, ...

As RadarOnline.com has reported, the stunning revelations are eerily similar to reports by a slew of American pilots who have had unnerving encounters with UFOs that defy the laws of physics – and ...

Could humanity ever build a home around another star? This episode examines the challenges of surviving on a planet orbiting ...

During the xAI all-hands meeting on Wednesday, the billionaire shared his vision of having moon-based factories and mass drivers. "We're actually gonna have a Mass Driver on the Moon," Musk said. A ...

For nearly five decades, Steven Spielberg has helped define what alien stories mean to movie audiences. Sometimes they arrive as cosmic miracles. Sometimes as existential threats. Sometimes as ...