For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

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

Astronomers may have uncovered a hidden population of galaxies that could rewrite what we know about the universe's evolution ...

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) ...

Astronomers tallying up all the normal matter—stars, galaxies and gas—in the universe today have come up embarrassingly short ...

The collaboration measured the polarization of light from the cosmic microwave background ... and galaxy clusters. In a sense, it's tracing the evolution of the universe from its infancy to ...

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

Scientists discover ancient galaxy created early transparent bubbles, challenging cosmic timeline of universe formation.

JADES-GS-z13-1-LA is a young galaxy shining just 330 million years after the Big Bang, signaling it's part of a process called reionization.