Since the 1960s, scientists have been intrigued by a mysterious seismic pulse occurring every 26 seconds. Originating in the ...

For decades, Pluto was thought to be just another frozen rock spinning around the Sun, far from the action and mystery of the ...

We found big chunks of the impactor Theia.” With those five words to The New York Times, Caltech geophysicist Qian Yuan ...

An exhaustive examination of lunar gravity using data obtained by two NASA robotic spacecraft is offering new clues about why ...