ADDIS ABABA, Ethiopia (AP) — Volcanic activity in northern Ethiopia’s long-dormant Hayli Gubbi volcano subsided Tuesday after ...

NASA plans to use the X-59, an experimental vehicle, to fly faster than the speed of sound without generating sonic booms.

The order announced the “Genesis Mission” for AI, a new federal push to mobilize the federal government's research and data ...

NASA will provide live coverage as astronaut Chris Williams and two Russians launch to the International Space Station on ...