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

The most distant and earliest "dead" massive galaxy ever seen shows some galaxies lived fast and died young shortly after the ...

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

Nicknamed the “Big Wheel,” a giant, spiral-shaped disk galaxy was spotted in an unusually crowded part of the early universe just two billion years after the big bang ...

Researchers have discovered a group of galaxies that have so far been inaccessible to Earth-based telescopes. These "hidden" ...

Astronomers have discovered that the Small Magellanic Cloud, a nearby dwarf galaxy, is being torn apart by the gravitational ...

The latest findings from the KATRIN experiment establish a maximum weight of under 0.45 electronvolts for neutrinos, the universe's lightest particle. Conducted over several years with international ...

It drives the movements of stars and galaxies, but dark matter is invisible. While it remains a colossal mystery, a study ...

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

Discover the power of black holes and their jets, and how they impact the formation of stars and potentially habitable worlds ...

Researchers have discovered a group of galaxies that have, until now, been inaccessible to Earth-based telescopes. These ...