Looking up at the night sky, it may seem our cosmic neighborhood is packed full of planets, stars and galaxies. But ...

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 ...

The Big Bang,the event that gave birth to our universe,is a theory that continues to fascinate and bewilder scientists and ...

This is the reason why we can’t see what happened at the very beginning of the universe. There is no free path for light to get from the Big Bang to our telescopes. We simply cannot see beyond the ...

For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

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 ...

For more than half a century, scientists have tried to understand dark matter—a mysterious form of matter that doesn’t emit ...

“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 ...

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 ...

The universe is expanding, but two exquisitely precise yardsticks say it’s doing so at two different speeds. That’s not a ...

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 ...

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 ...