Galaxy Mergers

Part of the Milky Way Is Much Older Than Previously Believed

The Milky Way is older than astronomers thought, or part of it is. A newly-published study shows that part of…

6 months ago

Astronomers see an Enormous Shockwave, 60 Times Bigger Than the Milky Way

Astronomers have a thing for big explosions and collisions, and it always seems like they are trying to one-up themselves…

7 months ago

The Large Magellanic Cloud Stole one of its Globular Clusters

Astronomers have known for years that galaxies are cannibalistic. Massive galaxies like our own Milky Way have gained mass by…

12 months ago

Rare Triple Galaxy Merger With at Least Two Supermassive Black Holes

One of the best things about that universe is that there is so much to it.  If you look hard…

1 year ago

Astronomers see a Rare “Double Quasar” in a Pair of Merging Galaxies

What's better than a quasar? That's right, two quasars. Astronomers have spotted for the first time two rare double-quasars, and…

1 year ago

When Galaxies Collide, Black Holes Don’t Always Get the Feast They Were Hoping for

What happens when galaxies collide? Well, if any humans are around in about a billion years, they might find out.…

2 years ago

Galaxy Mergers can Boost Star Formation, and it can Also Shut it Down

Galaxy mergers are beautiful sights, but ultimately deadly. In the midst of the collision, the combined galaxy will shine brighter…

2 years ago

Astronomers Find the Hollowed-Out Shell of a Dwarf Galaxy that Collided With the Milky Way Billions of Years Ago

In 2005 astronomers found a dense grouping of stars in the Virgo constellation. It looked like a star cluster, except…

2 years ago

A Stellar Stream of Stars, Stolen from Another Galaxy

Modern professional astronomers aren't much like astronomers of old. They don't spend every suitable evening with their eyes glued to…

2 years ago

Astronomers Find a Galaxy Containing Three Supermassive Black Holes at the Center

NGC 6240 is a puzzle to astronomers. For a long time, astronomers thought the galaxy is a result of a…

3 years ago