Galaxy Mergers
Astronomers Find the Most Massive Pair of Supermassive Black Holes Ever Seen
Supermassive black holes have been found at the heart of most galaxies but understanding how they have formed has eluded…
Hubble Sees a Bridge of Stars Connecting Two Galaxies
The poetic-minded among us like to point out how Nature is a dance. If they're right, then galaxies sometimes form…
The JWST Solves the Mystery of Ancient Light
The very early Universe was a dark place. It was packed with light-blocking hydrogen and not much else. Only when…
JWST Sees Merging Galaxies Releasing the Light of a Trillion Suns
If we want to know what it'll look like in about 4.5 billion years when our galaxy merges with Andromeda,…
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.…
The Perfect Tidal Tail Connects These two Galaxies Seen by Hubble
Sometimes it's tempting to imagine a supernatural hand behind the arrangement of celestial bodies. But the Universe is big, huge…
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…
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…
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…
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…