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

"The new model can account for both structure formation and stability, and the key observational properties of the expansion of the universe at large." ...

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.

For decades, scientists have been puzzled by the missing mass in the universe. While we know that about 85% of the universe ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and several years ago he saw something he couldn’t explain. Farnocchia works at ...

Astronomers using W. M. Keck Observatory on Maunakea, Hawaiʻi Island have found compelling evidence of a dark matter-deficient dwarf galaxy, FCC 224. This ultra-diffuse galaxy is located on the ...

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

Dark matter is hypothesized to outweigh "ordinary matter" in the universe by a factor of five. That means all the stuff we ...

Galaxies may not be as simple as "young and blue" or "old and red." A new idea from astrophysicist Charles Steinhardt proposes a third type: red star-forming galaxies that break the mold. These galaxi ...

Researchers say they discovered observational evidence of string theory, which could turn everything we know about the ...

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a ...

First Steps: stars Pedro Pascal, Vanessa Kirby, Joseph Quinn, and Ebon Moss-Bachrach, and director Matt Shakman share details about the upcoming Marvel superhero film — and why it's different from ...