SAN JOSE, Calif. — A small Colorado company has successfully tested a new type of propulsion technology that it believes could eventually enable low-cost, single-stage-to-orbit launch vehicles.

The coming flight is not an isolated experiment but part of a coordinated effort to give China a domestic ecosystem of ...

A full decade after SpaceX pioneered reusable rocketry with the first-ever successful landing of its Falcon 9 booster, the rest of the world is finally catching up. These few successes aren’t based on ...