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

The Dark Energy Spectroscopic Instrument (DESI) has completed its originally planned five-year mission and mapped more than 47 million galaxies and quasars, and will continue observations into 2028 ...

Astronomers knew 3I/ATLAS wasn’t a local comet not long after first spotting it in July 2025. As only the third interstellar ...

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 ...

Astronomers have captured stunning new images of a distant cloud of gas and dust where unusual molecules called “buckyballs” ...

Fifteen years after Western astronomers first discovered "buckyballs" in space (soccer ball-shaped molecules that resemble a ...

NASA will launch the Roman Space Telescope this September—8 months early—to map 12% of the sky and probe cosmic mysteries ...

Scientists built a virtual universe so convincing it's fooling astronomers, and COLIBRE may have just rewritten galaxy ...

The Curiosity rover snapped a series of peculiar polygons that look suspiciously like giant fossilized reptile scales.

Light travels at a whopping 299,792 kilometers per second. It zips from Earth to the Moon in a heartbeat, clears the orbit of ...

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

Black holes formed before the Big Bang may still exist as cosmic fossils, offering new clues about dark matter and the origin ...