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 ...

Quantum physics is quietly rewriting the rulebook for how far and how fast humanity might travel beyond Earth. A cluster of ...

It may seem like a harmless, miniature version of the space shuttle, but some industry analysts are wondering if the secretive robotic spacecraft set to launch today from Cape Canaveral, Fla., has a ...

The problem with keeping orbital objects secret is that they’re visible to literally everyone on the planet under the orbital path who thinks to look for them, but otherwise the Department of Defense ...

HELSINKI — Australian company HEO has imaged and modeled a mystery Chinese satellite prior to its reentry into Earth’s atmosphere, revealing previously unknown details about the spacecraft. Xinjishu ...