One possibility is that the background waves come from defects in the very early universe as it changed phases. The idea is that this left an imprint in space-time, like the cracks that form when ...

Astronomers are trying to listen to the universe's background hum — a cascade of gravitational waves believed to exist since the first rapid inflation of space following the Big Bang over 13.8 ...

The detection of a predicted universal background of gravitational waves rippling across the fabric of space-time was announced last Wednesday by the NANOGrav consortium of over 190 scientists at ...

“We have evidence of what we call ‘the gravitational wave background,’ which is a hum of gravitational waves coming from all of the gravitational waves in the universe,” Dr. Sarah Vigeland ...

First predicted by Albert Einstein more than a century ago, gravitational waves are ripples in the fabric of the universe that travel through everything at the speed of light almost entirely ...

That means our universe, theoretically, should consist of equal amounts of both. But it doesn't. Baryonic matter totally dominates the cosmos.

It's difficult to know how many stars have gone supernova since the Big Bang 13.8 billion years ago, but it's just possible that studying the background "buzz" of neutrinos, the so-called diffuse ...

An artist’s rendering of gravitational waves from a pair of close-orbiting black holes. The waves are passing by several pulsars and the Earth. Credit: Keyi “Onyx” Li/U.S. National Science Foundation.

Today, those particles of light arrive to us in the form of a faint glow known as the cosmic microwave background. Then the universe entered what are known as the dark ages.

Astronomers Finally Hear Universe's Gravitational Wave Background, Why It Matters by Tim Sweezy — Thursday, June 29, 2023, 11:21 AM EDT Comments ...

As a result of the last scattering, photons filled the universe at a specific temperature of 2.73 Kelvin, which equals minus 454.76 degrees Fahrenheit (minus 270.42 degrees Celsius) which is just ...