What: New analyses using early observations from the European Space Agency’s Euclid mission examine how galaxy mergers trigger active galactic nuclei (AGN), luminou ...

This idea is called the big bang model—which is an unfortunate name because it brings to mind a cosmos expanding like an ...

A new simulation tool lets scientists explore whether self-interacting dark matter could reshape galaxies from the inside out.

Using observations from the James Webb Space Telescope (JWST), the researchers identified an ongoing merger event of at least ...

Galaxy merger is a crucial process in galactic evolution that has happened since the first galaxies came into being. Now JWST ...

Nearly all stars are found inside or around galaxies, because that's where the conditions are right for stars to form. Within galaxies, stars form inside cold, dense molecular gas clouds like those ...

A sheet of dark matter lying beyond the boundary of the Local Group is responsible for this.

Discover seven unusual galaxies defying scientific predictions, from impossibly bright early universe objects to astrophysics ...

Understanding how galaxies grow has long stood as one of astronomy’s core challenges. Over time, scientists have gathered evidence that galaxy mergers matter. When two galaxies move close, gravity can ...

NASA’s Hubble Space Telescope got a rare look at the aftermath of two cosmic collisions — and helped scientists solve a decades-old mystery. Many years ago, scientists saw a dense, bright spot near a ...

Some galaxies in the early universe were absolute powerhouses, churning out stars at rates that would dwarf the Milky Way's modest stellar production. These "monster galaxies," buried deep in dust ...

A surprising new set of objects in space with mismatched parts has been discovered by University of Missouri astronomers, ...