Astronomers discover galaxy CDG-2 that's 99% dark matter using Hubble, Euclid, and Subaru telescopes working together to detect this cosmic ghost 300 million light-years away.

Dark matter doesn’t emit, absorb, or reflect light. It’s invisible but supposedly makes up 85% of the universe’s mass.

For decades, astronomers have treated dark matter as the invisible scaffolding of the cosmos, a mysterious substance that outweighs normal matter and shapes galaxies. A new wave of research is now ...

Using data from the Hubble Space Telescope, ESA’s Euclid space observatory, and Hawaii’s Subaru Telescope, the researchers discovered faint light emitting around the clusters. That light was clear ...

You know that feeling when you find something hiding right where you've been looking all along? Astronomers just had that moment on a cosmic scale. A galaxy so faint, so nearly invisible that no one ...

Study led by University of Bonn finds galaxy clusters contain about twice as much normal matter as previously estimated, based on recalculated stellar populations and survey data.

Using the Hubble Space Telescope, astronomers have discovered what seems to be a galaxy that is the most heavily dominated by dark matter ever seen.

In the vast tapestry of the universe, most galaxies shine brightly across cosmic time and space. Yet a rare class of galaxies ...

Mysterious blasts of radio waves from across the universe called fast radio bursts help astronomers catalog matter. ESO/M. Kornmesser, CC BY-SA Chris Impey, University of Arizona If you look across ...

Calculating the total mass of the universe is not simple, because most of the mass is invisible. In a pie chart of the contents of the universe, only 5 percent is normal matter, atoms that make up all ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Chris Impey, University of Arizona (THE CONVERSATION) If you look across space with a ...