Interior of the 20-foot diameter vacuum tank at the NASA Lewis Research Center’s Electric Propulsion Laboratory.

Erosion, tectonic uplift, and a human-built dam have all helped shape the Upper Lake Powell area in Utah.

Eta Carinae may be about to explode. But no one knows when - it may be next year, it may be one million years from now. Eta Carinae's mass - about 100...

Technicians move NASA’s Europa Clipper spacecraft inside the Payload Hazardous Servicing Facility to accommodate installation of its five-panel solar ...