Physicists are no longer content to simply listen to ripples in spacetime. A new proposal sketches out how an exquisitely ...

A new concept for energy transfer between gravitational waves and light. When massive cosmic objects such as black holes merge or neutron stars crash into one another, they can produce gravitational ...

On May 21, 2019, a ripple in the fabric of spacetime swept over Earth at the speed of light. These pass through us all the time, but this one was strong enough to warp space noticeably, at least to ...

When two black holes merge or two neutron stars collide, gravitational waves can be generated. They spread at the speed of ...

A neutron star is 2 solar masses compressed into a ball only 12 kilometers wide. Its surface gravity is so immense it compresses atoms and molecules into raw nuclei and squeezes electrons into protons ...

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of "Ask a Spaceman" and "Space Radio," and author of "How t o Die in Space." Astronomers hope to use pulsars ...