Astronomers have heard the faint hum of gravitational waves echoing throughout the universe for the first ... been hunting for the gravitational wave background, a faint but persistent echo ...

The polarization of light from the cosmic microwave background is key to understanding the young Universe. Sigurd Naess points out that ACT has five times higher resolution than Planck.

"This shocking result means that we now need to revisit the very foundations of everything we know about cosmology," said the reseachers.

The picture that emerges is a universe that looks like a choppy sea, churned by violent events that happened over the course of the past 13 billion-plus years. The gravitational wave background ...

The expansion of the universe, the cosmic microwave background (CMB), and even the ages of the oldest stars supports this widely accepted theory. However, it’s also left a few nagging mysteries ...

New research has unveiled images of the universe in its infancy—a mere 388,000 after the Big Bang. The snaps of the universe were produced by the Atacama Cosmology Telescope collaboration (ACT ...

Host Regina Barber talks with two cosmologists about the cosmic microwave background, its implications for the universe's origins and the discovery that started it all. Interested in more space ...

Over billions of years, the universe's stars and galaxies shined their light into space, leaving behind an imperceptibly faint night light known as the cosmic optical background. NASA's New ...

The other method examines the cosmic microwave background, the leftover radiation from the big bang, to study the initial conditions of the universe and estimate how quickly it has expanded since ...

"The cosmic microwave background is in the back of everything we see in the universe. It's the edge of the observable universe," Ferraro said. "So you can use that as a backlight to see where the ...

Nowadays the average temperature of the universe sits just below a chilly 3 Kelvin, a steep decline from the primordial 3000 Kelvin. This was deduced from studies of the cosmic background ...

The "afterglow" of the universe is an important piece of evidence for the Big Bang. This background radiation also provides important answers to the question of how the first galaxies were able to ...