A decade ago, physicists using twin detectors in Washington State and Louisiana detected gravitational waves—subtle ripples in space-time—for the first time. The landmark discovery, confirming Albert ...

For decades, seismologists have known that Earth is never completely still, even when no earthquakes are happening and no volcanoes are erupting. Sensitive instruments worldwide record a continuous ...

Scientists may have found a new way to unlock the vast secrets of the Big Bang—the cosmic event thought to have kicked off the expansion of the universe billions of years ago. The revelation came in ...

“We show that by using the background gravitational-wave hum from merging black holes in distant galaxies, we can learn about the age and composition of the universe.” The tension behind a single ...