Galaxy Mergers
JWST Reveals Star Formation at Cosmic Noon
Understanding the star formation rate (SFR) in a galaxy is critical to understanding the galaxy itself. Some galaxies are starburst…
This Ancient Galaxy Merger Will Produce a very Luminous Quasar
In the contemporary Universe, massive galaxies are plentiful. But the Universe wasn't always like this. Astronomers think that galaxies grew…
No Merger Needed: A Rotating Ring of Gas Creates A Hyperluminous Galaxy
Some galaxies experience rapid star formation hundreds or even thousands of times greater than the Milky Way. Astronomers think that…
The Milky Way’s Last Merger Event Was More Recent Than Thought
The Milky Way is only as massive as it is because of collisions and mergers with other galaxies. This is…
The Venerable Hubble Space Telescope Keeps Delivering
The world was much different in 1990 when NASA astronauts removed the Hubble Space Telescope from Space Shuttle Discovery's cargo…
Do Clashing Galaxies Create Odd Radio Circles?
Within the last five years, astronomers have discovered a new type of astronomical phenomenon that exists on vast scales –…
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,…