Cloud 9 is a failed galaxy. It’s a clump of dark matter, called a dark matter halo, that never formed stars. But this failure could be the key to a mystery almost as old as the universe itself: dark ...

The "Cosmic Grapes" galaxy formed just 900 million years after the Big Bang, revealing a never-before-seen structure.

Scientists have detected a surprisingly hot galaxy cluster dating back to the universe’s infancy. The cluster formed far ...

Some newly found stars in a small galaxy called Sextans A are forming without some of the usual "ingredients," raising ...

"This is a tale of a failed galaxy." ...

Astronomers believe this barred spiral galaxy could be the oldest example of its kind ever observed. Research led by Daniel ...

Galaxy clusters are formed by a dense packing of many galaxies, making them the most massive structures in the universe. Their progenitors, protoclusters, show these galaxies in their infancy, ...

Three billion years after the Big Bang, a massive galaxy already looked like it had run out of time. It spun in a calm, ...

"It points to a slow starvation rather than a single dramatic death blow." ...

Cloud-9 entered the picture in 2023, when astronomers using the Five-hundred-meter Aperture Spherical Telescope (FAST) in China detected an unusual cloud of neutral hydrogen near the spiral galaxy ...

The subatomic particles are incredibly numerous. About 1,000 neutrinos from stars other than the sun pass through a thumbnail ...

Most astronomers agree that young galaxy clusters should be relatively cool compared to older ones. But researchers recently ...