ORCs are vast, faint rings of radio energy that surround galaxies and can be detected only in radio wavelengths of the ...

The largest known structure in the Universe may be even larger than the large we thought it was. A re-examination of the distribution of powerful space explosions suggests that the Hercules-Corona ...

A newly discovered odd radio circle in space could serve as a time capsule for the violent events that shape galaxies.

According to our best understanding, the universe should be homogeneous at large scales. This means that it's ok to have clumps of matter and areas of void, but it should all average out. So it’s ok ...

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

The universe's invisible dark matter might swirl into spinning clumps laced with countless tiny vortices, new theoretical work suggests. The findings, published May 30 in the journal Physical Review D ...

For years, scientists have worked to chart the universe’s massive structure, aiming to test key models of cosmology. These efforts also help uncover how galaxies form and change over time. While most ...

Galaxy rotation curves have been confounding astronomers for decades. Stars on the peripheries of galaxies rotate faster than visible matter can account for.

"There are more questions than answers at this point." Dark energy could have an accomplice that helps it slow the growth of large cosmic structures, such as vast superclusters made up of clusters of ...

A new JCAP study tests an “emulator” to reconstruct the large-scale structure of the cosmos If you think a galaxy is big, compare it to the size of the Universe: it’s just a tiny dot which, together ...

REUTERS - Astronomers have discovered the largest known structure in the universe - a group of quasars so large it would take 4 billion years to cross it while traveling at speed of light. The immense ...