For the last five years, the Dark Energy Spectroscopic Instrument (DESI) has been systematically scanning the night sky.

Galaxies are clouds of stars that range in both size and composition. Some contain hundreds of millions of stars while the largest galaxies can contain trillions of stars. And while it’s not entirely ...

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

The most realistic picture yet of how galaxies formed and then evolved from the beginning of time has been revealed in a ...

Using the James Webb Space Telescope (JWST), scientists found that many galaxies started as thick discs before forming the thin discs we see now. This discovery helps answer a long-standing mystery ...

Astronomers have found a rare heart‑shaped structure in space created when two galaxies collide. The 'romantic' heart is ...

A snapshot of the simulation. (Schaye et al., 2026) Long ago, a time existed before galaxies had drawn themselves together ...

A Jim Lattis, director of the UW Space Place at the University of Wisconsin-Madison: Galaxies are clouds of stars that range in both size and composition. Some contain hundreds of millions of stars ...