The X-37B, the US Space Force's secretive space plane, will soon take flight again.

Who watches the watchmen and who spies on the spy satellites? It turns out it's an optical package called Morning Sparrow ...

Space Force is sending the X-37B up once again, this time to test laser communications and a “quantum inertial sensor.” ...

China has quietly been developing a classified space plane program, and new intel suggests it’s far more advanced than anyone ...

A U.S. spaceplane will head to the heavens next month to test a quantum sensor that could help navigation in orbit without ...

It’s unclear how long OTV-8 will last, but if past missions are any indication, the unpiloted plane will remain above the ...

The Invictus project is leveraging tech that the now-defunct British company Reaction Engines developed for a huge space ...

But, the new space plane is being designed to be a more efficient and cost-effective way of reaching low-Earth orbit (LEO), company officials said.