Andromeda Galaxy
A Star Disappeared in Andromeda, Replaced by a Black Hole
Massive stars about eight times more massive than the Sun explode as supernovae at the end of their lives. The…
A New Catalog Charts the Evolution of the Universe Over Time
An atlas doesn’t seem to be an essential item in cars these days but think about them and most people…
Are Andromeda and the Milky Way Doomed to Collide? Maybe Not
Scientists discovered the Andromeda galaxy, known as M31, hundreds of years ago, and around a century ago, we realized that…
Not All Black Holes are Ravenous Gluttons
Some Supermassive Black Holes (SMBHs) consume vast quantities of gas and dust, triggering brilliant light shows that can outshine an…
Are Andromeda and the Milky Way Already Exchanging Stars?
I often drag out the amazing fact that the Andromeda Galaxy, that faint fuzzy blob just off the corner of…
We Might Be Able to Measure Dark Energy Through the Milky Way's Collision With Andromeda
The Milky Way and Andromeda are set to collide in a few billion years but are still over two million…
Astronomers Uncover Mass Migration of Stars into Andromeda
Astronomers know that galaxies grow over time through mergers with other galaxies. We can see it happening in our galaxy.…
A Dark Matter map of our Local Cosmic Neighborhood
A new simulation by a team of astrophysicists has resulted in the most detailed 3D map of the cosmic web,…
Hubble Shows the True Size of Andromeda
It's possible that you've seen the Andromeda galaxy (M31) without even realizing it. The massive spiral galaxy appears as a…
Now We Know That Dark Matter Isn’t Primordial Black Holes
A new study by an international team of scientists has tested Hawking's theory of dark matter, and ruled out that…