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 ...

Elon Musk’s AI chatbot Grok experienced its latest meltdown this week, telling users that the mercurial CEO is more athletic than basketball superstar LeBron James and rivals Leonardo da Vinci in ...

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.