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Astrophysicists present first evidence of gravitational wave ‘background’

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 ...
New Scientist

Gravitational waves produce a background hum across the whole universe

The fabric of the universe is constantly rippling, according to astronomers who have discovered a background buzz of gravitational waves. These waves may be produced by supermassive black holes ...
Physics World

Pulsar timing irregularities reveals hidden gravitational-wave background

Cosmic claims: researchers have used radio telescopes around the world to hunt for gravitational waves using the subtle variations in the timing of pulsars. (Courtesy: Aurore Simonnet for the NANOGrav ...
SpaceNews

After 15 years, pulsar timing yields evidence of cosmic background gravitational waves

The universe is humming with gravitational radiation — a very low-frequency rumble that rhythmically stretches and compresses spacetime and the matter embedded in it. That is the conclusion of several ...
Science Daily

After 15 years, pulsar timing yields evidence of cosmic background gravitational waves

LIGO confirmed the existence of gravitational waves in 2015, detecting one-time perturbations of spacetime from the merger of large black holes. There should be a background of gravitational waves ...