The Dark Energy Spectroscopic Instrument spent five years observing the sky from Arizona. Now, researchers have a trove of ...

A developing galaxy cluster dating to about 1 billion years after the Big Bang is shown in this handout image released on January 28, 2026. The white box marks the field of view of the Chandra X-ray ...

New simulations show that early ultraviolet light controlled whether ultra-faint dwarf galaxies could form stars.

NASA’s Chandra X-ray Observatory has detected the first X-ray emissions from a 'little red dot' galaxy, 3DHST-AEGIS-12014, located 11.8 billion light-years away. This rare observation links mysterious ...

Dark matter remains one of the most intriguing components of the cosmos, making up about 27% of the universe's total mass-energy content. It cannot be seen directly, yet its presence is inferred ...

Astronomers used subtle warps in galaxy shapes to map the invisible forces shaping the universe. By reanalyzing years of telescope images, they studied more than 100 million galaxies across an ...

Ultra-faint dwarf galaxies—tiny satellite galaxies orbiting the Milky Way—have long been seen as cosmic fossils. Now, a new ...

The local universe may be expanding more slowly than previously thought. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The local universe may ...