Ultra-faint dwarf galaxies orbiting the Milky Way are cosmic fossils. New simulations reveal how these tiny systems reflect ...

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

By studying galaxy clusters separated by hundreds of millions of light-years, Penn physicist Patricio Gallardo and ...

The team successfully built the largest, highest-resolution 3D map of the cosmos ever constructed. The completed map charts ...

The most precise measurement yet shows the Universe is expanding faster than expected, deepening the Hubble tension. The ...

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

New COLIBRE simulations show how cold gas and dust help galaxies evolve from the early universe to today. (CREDIT: Monthly ...

Chinese scientists and international collaborators have used one of the largest cosmological simulations ever created to "fast-forward" the universe from the Big Bang to the present day inside a ...

A new study explains how dense pockets of matter could have survived over an age-old cycle of multiple ‘Big Bangs.’ ...

West Palm Beach, FL - A new analysis of observations from the James Webb Space Telescope (JWST) is advancing a bold ...

Only about 5% of the universe is composed of normal matter that we can directly observe, while the remaining 95% is widely ...