galaxy evolution
The James Webb Links Modern Green Pea Galaxies to Ancient Galaxies in the Cosmic Dawn
When the James Webb Space Telescope lifted off from Earth on Christmas Day in 2021, it carried a lot of…
Astronomers Detect the Faint Glow of Stars in Between Galaxies
Not all stars are members of galaxies. Some stars exist in the space between galaxies, though they didn't form there.…
Webb Sees Organic Molecules in the Hearts of Galaxies, Surprisingly Close to Active Supermassive Black Holes
When the James Webb Space Telescope (JWST) launched, one of its jobs was studying galactic formation and evolution. When we…
Gaia Finds Ancient Satellite Galaxy Pontus Embedded in Milky Way
A recent study looked at stellar streams hidden in Gaia’s data, to uncover a torturous past.
A Detailed Scan of the Milky Way Finds Possible “Fossil” Spiral Arms
New research has revealed previously unknown wispy structures in the Milky Way disk that could offer clues about the history…
Early Massive Galaxies ran out of gas, Shutting Down Their Star Formation
Galaxies that formed within the first few billion years after the Big Bang should have lived long, healthy lives. After…
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.…
This galaxy took only 500 million years to form
Galaxies are supposed to build up a very slowly, taking billions of years to acquire their vast bulk. But a…
Extreme galaxies depend on extreme conditions for their formation
Some galaxies are too small, and some galaxies are too big, while others are just right. A new survey of…
Hubble Captured a Photo of This Huge Spiral Galaxy, 2.5 Times Bigger than the Milky Way With 10 Times the Stars
This galaxy looks a lot like our own Milky Way galaxy. But while our galaxy is actively forming lots of…