This mission will pave the way for groundbreaking observations of everything from petroleum reserves to global supplies of ...

Contrary to what you may intuit, the Earth's gravity isn't uniform, and there's one place where it's much weaker than anyone expected.

All matter has a gravitational field that attracts other objects. The more mass an object has, the greater its gravitational field will be. For example, the Earth has a greater gravitational field ...

Einstein's theory of general relativity suggests that the "memory" of ancient events, such as black hole mergers, may be etched into the fabric of space-time by gravitational waves. New research shows ...

The gravitational field of a rotating black hole is powerful and strange. It is so powerful that it warps space and time back upon itself, and it is so strange that even simple concepts such as ...