Scientists say interstellar object 3I/ATLAS shows unprecedented chemical and dynamical anomalies, challenging comet formation theories and potentially reshaping space science.

New research shows how the star's powerful outbursts could help scientists assess which worlds might support life.

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

Astronomers at the University of North Carolina at Chapel Hill have helped uncover new clues about the longest-lasting cosmic ...

New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

Clues about how galaxies like our Milky Way form and evolve and why their stars show surprising chemical patterns have been ...

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

When a distant galaxy briefly outshines everything around it in high-energy light, astronomers usually know which playbook to reach for. Gamma-ray bursts tend to fall into familiar categories, either ...

A flash of high-energy light from deep space has forced astronomers to rethink what they thought they knew about the most ...

A Rutgers astrophysicist is helping to solve a cosmic puzzle that has astronomers scratching their heads. The mystery centers ...

Researchers have discovered a large, orderly spiral galaxy that formed soon after the Big Bang, when space was only about 1.5 ...

The galaxy NGC 2775, located 67 million light-years from Earth in the constellation of Cancer, has an unusual shape that ...