Hubble's new image of galaxy cluster Abell 209 reveals over 100 galaxies and gravitational lensing effects from dark matter ...

Can one vanishing particle shatter string theory — and explain dark matter? Penn physicists and collaborators at Arizona State University "test" the fallibility of a framework that seeks to ...

While recent research shows the night sky is getting brighter every year across North America, the Big Bend area in Texas has fended off the light glow that washes out starry nights.

Using the James Webb Space Telescope, scientists spotted thin and thick disks in galaxies as far back as 10 billion years ago—something never seen before. These observations reveal that galaxies ...

The Hubble Space Telescope has been used to study NGC 1052-DF2 — a galaxy that is lacking dark matter. Credit: NASA's Goddard Space Flight Center Mexicans protest Americans moving into their ...

Dr. Rubin’s findings pointed to the existence of dark matter — some unknown particles that provide the gravity that keeps the galaxies from flying apart.