dark matter halo
The Milky Way’s History is Written in Streams of Stars
The Milky Way is ancient and massive, a collection of hundreds of billions of stars, some dating back to the…
The Milky Way’s Smallest, Faintest Satellite Galaxy Found
The Milky Way has many satellite galaxies, most notably the Large and Small Magellanic Clouds. They're both visible to the…
This New Map of 1.3 Million Quasars Is A Powerful Tool
Quasars are the brightest objects in the Universe. The most powerful ones are thousands of times more luminous than entire…
The Milky Way's Disk is Warped. Is That Because our Dark Matter Halo is Tilted?
Astronomers have measured the Milky Way's shape and found that the disk is warped and not a flat spiral like…
A Massive Galaxy With Almost No Dark Matter
Astronomers have found a massive galaxy that contains little to no Dark Matter, something that doesn't fit with current cosmological…
Gravitational Lensing is Helping to Nail Down Dark Matter
Using gravitational lenses, a team of astronomers showed how axions could be the particle that makes up Dark Matter.
Missing Mass? Not on our Watch—Dr. Paul Sutter Explains Dark Matter
In the first episode of a new series with ArsTechnica - Edge of Knowledge - Dr. Paul Sutter explains the…
How did Supermassive Black Holes Form? Collapsing Dark Matter Halos can Explain Them
We don't quite understand how the first supermassive black holes formed so quickly in the young universe. So a team…
New All-Sky Map of the Milky Way’s Galactic Halo
The outer reaches of the Milky Way galaxy are a different place. Stars are much harder to come by, with…
Nearby Ancient Dwarf Galaxies Have a Surprising Amount of Dark Matter
According to new research led from MIT, ancient dwarf galaxies may have had more dark matter than previously thought.