galaxies
What Shuts Down a Galaxy’s Star Formation?
A new study finds that while black holes drive the formation of galaxies, they are also what kills them in…
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…
A Giant Galaxy Seen Lighting Up the Universe Shortly After the Big Bang
The discovery of a bright galaxy that existed 13 billion years ago is shedding light on a period known own…
NGC 2275: An Absolute Unit of Galactic Flocculence
The Hubble Space Telescope has the knack for finding every size and shape of galaxy imaginable – from small, medium…
Astronomers See Through the Milky Way’s Dust to Track Where Radiation is Coming From at the Center of the Galaxy
The center of our very own galaxy might be one of the Universe's most mysterious places. Astronomers have to probe…
Complete and Total Mayhem in a Distant Galaxy Collision
A cluster of galaxies is nothing trivial. The shocks, the turbulence, the energy, as all of that matter and energy…
Quasars are the Biggest Particle Accelerators in the Universe
We puny humans think we can accelerate particles? Look how proud we are of the Large Hadron Collider. But any…
Barred Spiral Galaxy NGC 2608, Surrounded by Many Many Other Galaxies
Meet NGC 2608, a barred spiral galaxy about 93 million light years away, in the constellation Cancer. Also called Arp…
Hubble Looked as Far Back in Time as it Could, and Still Couldn’t See the First Generation of Stars in the Universe
Astronomers don’t know exactly when the first stars formed in the Universe because they haven’t been observed yet. And now,…
Astronomers Find the Source of the Huge Bubbles of Gas Flowing Out of the Milky Way, Still No Idea What Caused Them
There's an unusual paradox hampering research into parts of the Milky Way. Dense gas blocks observations of the galactic core,…