On January 14, 2025, a pair of black holes with nearly identical masses crashed together roughly 1.2 billion light-years away ...

Researchers have found the first direct evidence of a “background” of gravitational waves in the universe — a sign that gravitational waves from slowly merging pairs of supermassive black holes, or ...

Ten years ago today, on Sept. 14, physicists detected gravitational waves rippling through the cosmos for the first time. The roots of this discovery date back a century. Albert Einstein's general ...

Simon Stevenson receives funding from the Australian Research Council. He works for Swinburne University of Technology. He is a member of OzGrav and the LIGO Scientific collaboration. Ten years ago, ...

The universe has delivered the loudest gravitational wave ever recorded, and it appears to have given Einstein’s theory of general relativity one of its toughest tests so far. According to the study ...

Decades ago physicists realized that gravitational waves are no mere passing phenomenon. Instead those ripples in space should leave behind permanent marks: a fixed distortion in their wake. So far ...

On Thursday, the European Space Agency’s Science Programme Committee gave the go-ahead to the Laser Interferometer Space Antenna, or LISA project. This would mean the construction of the mission’s ...

Gravitational waves are ripples in the fabric of spacetime predicted by Albert Einstein’s general theory of relativity, first detected in 2015. But an expected corresponding low-frequency ...

Think of spacetime as a rubber sheet, which is stretched when there are large objects such as stars and black holes.

To understand why scientists are excited about detecting a new background, just look to the history of studies of the CMB. There’s a new cosmological background in town. In June, researchers from the ...