A new method to analyze gravitational-wave data could transform how we study some of the universe's most extreme events—black holes smashing into each other.

The crater was first detected as a huge dent in Earth's gravitational field. Initial ground-based seismic and gravity surveys already indicated that the crater was huge — around 150 miles (240 ...

The Indian Ocean "gravity hole" is a region where Earth's mass is reduced, leading to weak gravitational pull, lower-than-average sea levels and a puzzle scientists have only just begun to solve.