The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

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

Deep inside a nearby galaxy, a black hole sits behind a thick wall of dust. Almost all its light gets trapped.

"We found an unexpected chemical complexity, with abundances far higher than predicted by current theoretical models." ...

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

The James Webb Space Telescope has identified an extraordinary system of five galaxies merging when the universe was only ...

Researchers Pieter van Dokkum of Yale University and Gabriel Brammer of the University of Copenhagen have uncovered a remarkable cosmic system in archival data from the James Webb Space Telescope’s ...

For many years, scientists have tried to understand how the Milky Way is positioned in space, and how it moves together with ...

A study led by the Center for Astrobiology (CAB), CSIC-INTA, using modeling techniques developed at the University of Oxford, ...

A sliver of space where scientists found Segue 1, a faint dwarf galaxy about 75,000 light-years away, in 2006. - Marla Geha / W.M. Keck Observatory It started with a homework assignment: A University ...

Galaxy dynamics are confronted with one of the deepest problems of modern physics: the dark matter problem. The motions of stars and gas observed exceed what can be explained by the mass visible in ...

New radio observations of molecular gas reveal how dozens of galaxies could have rapidly merged together in the early ...