X-37B spaceplane is secretive and operates in orbit for research and testing, competing with China. Spaceplanes operate in space and air, land accurately on runways, but need a rocket launch.

NASA’s long-promised space plane is finally on the cusp of leaving the runway behind and heading for orbit, a decade after the agency first backed the concept. The lifting-body vehicle known as Dream ...

We don't know for sure, but there are some intriguing clues. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. China's reusable space plane is ...