Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...

This has given scientists their best look yet at the Cosmic Microwave Background (CMB) - the leftover radiation from the Big Bang which fills the entire observable universe. What looks like clouds ...

New observations with the Atacama Cosmology Telescope in Chile reveal the earliest-ever "baby pictures" of our universe, showing some of the oldest light we can possibly see.

An IIT scientist proposes a twin universe born alongside ours, where time flows in reverse. This theory challenges the Big ...

In fact, more than half of normal matter—half of the 15% of the universe's matter that is not dark matter—cannot be accounted ...

Firm evidence supporting this ‘Big Bang’ theory came in 1965 with the discovery of the cosmic microwave background 7 — remnant radiation from when the Universe became transparent some ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

"Really, Euclid is not only a dark universe detective, it's also a time machine. We will look back 10 billion years in cosmic ...

A new analysis of astronomical data suggests unknown physics is at work assisting dark energy in acting almost as ...

The cooled remnant of the first light that permeated the universe is known as the cosmic microwave background—leftover radiation from the Big Bang that can still be detected in the distant universe.

For decades, scientists have been puzzled by the missing mass in the universe. While we know that about 85% of the universe is made up of dark matter, the remaining 15% is made up of normal (baryonic) ...

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...