An experimental SpaceX rocket exploded at the end of a high-altitude test flight Tuesday, but heavy fog at the site left even SpaceX at least publicly uncertain about exactly what caused the explosion ...

China’s push to match the world’s leading space powers took a dramatic turn when its first orbital-class reusable rocket reached space, then broke apart in a fiery crash during its attempted return.

A SpaceX test flight endangered several packed passenger jets when it unexpectedly exploded over the Caribbean earlier this year, according to newly-released documents from the Federal Aviation ...