Astrophysics

NIRSpec spectroscopy of COLA1 and NEPLA4 reveals black holes 400-800 times overmassive for their host galaxies, offering the first detailed look at the aftermath of early-universe quasar activity.

A UC Riverside-led team used the largest JWST observing program to trace galaxies along the cosmic web from today out to redshift z ~ 7, and released the full pipeline and catalog publicly.

NGC 1052-DF9 is the third ultra-diffuse galaxy found lacking dark matter in a linear trail near NGC 1052, lending significant support to the Bullet Dwarf collision theory and challenging alternative gravity models.

The fourth gravitational wave transient catalog adds 128 new detections from a nine-month observing run, including the heaviest and fastest-spinning black hole mergers ever recorded.

Two March discoveries reveal a 10-billion-year-old lava world with a thick atmosphere and a sulfur-dominated planet unlike anything in existing classification systems.