Acting NASA Administrator Sean Duffy said SpaceX is “behind schedule” and thwarting the space agency’s ability to beat China back to the moon.

The space agency has been grappling with budget uncertainties and a talent exodus even before the shutdown. But NASA’s moon ...

Kate Adamala started work on a cell in which the natural molecular structure is reversed. Then a possible doomsday scenario became clear.

A newly discovered odd radio circle in space could serve as a time capsule for the violent events that shape galaxies.

Researchers found over 200 cultural artifacts within nests of bearded vultures, with the oldest item to date — a woven sandal ...