Dark matter may not have needed a calm, cold start to help build the universe. That is the challenge raised by new work from researchers at the University of Minnesota Twin Cities and Université ...

NGC 1052-DF2, the first of the three galaxies, opened a can of worms no one expected. (NASA, ESA, and P. van Dokkum/Yale University) Most of the mass in galaxies consists of stuff we cannot see.

The Bullet Cluster of galaxies might only have half as much dark matter than scientists thought, or perhaps even none at all, ...

An observatory in Chile is taking a timelapse of the sky over the Southern Hemisphere to help scientists measure the ...

The Puzzle of Early Galactic Giants In the standard picture of galaxy formation, large halos of dark matter form first. Their ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite galaxies—up to 100 more than we currently know. These elusive "orphan" galaxies have ...

For more than ten years, astronomers have observed an enigmatic gamma glow coming from the heart of our Milky Way. Known as ...

A Rutgers-led team of scientists has uncovered evidence of how galaxies expand by tracing the invisible scaffolding of the universe created by a mysterious substance known as dark matter. "Analyzing ...

NASA's Hubble Space Telescope captures the magnificent starry population of the Coma Cluster of galaxies, one of the densest known galaxy collections in the universe — and where the effect of dark ...

Dark matter doesn’t emit, absorb, or reflect light. It’s invisible but supposedly makes up 85% of the universe’s mass. Because it’s so abundant, astronomers believe it should explain many unsolved ...

Galaxies are far more than the sum of their stars. Long before stars even formed, dark matter clumped up and drew regular matter together with its gravity, providing the invisible scaffolding upon ...

Dark matter-free galaxy NGC 1052-DF9 was confirmed by Yale astronomers on June 16, 2026 — the third of its kind ever found ...