galaxies
Nearby Stream of Stars Reveals Past Cosmic Collision
The tangled remains of vast cosmic collisions can be seen across the universe, such as the distant Whirlpool Galaxy’s past…
Pushy Black Holes Stop Elliptical Galaxies From Forming Stars
Contradicting past theories, cold gas has been found in abundance in some elliptical galaxies -- showing that there must be…
‘Green Valley’ Of Galaxies Shows Off Gas And Star Formation
We keep saying this: the universe is more complex than it appears. Conventional thinking in galaxy research postulates that spiral galaxies…
Ghostly Cat’s Eye Nebula Shines In Space Telescope Calibration Image
Here's a glimpse of how a telescope gets ready for its main mission. The European Space Agency’s Gaia telescope is…
Teamwork! Two Telescopes Combine Forces To Spot Distant Galaxy Clusters
Doing something extraordinary often requires teamwork for humans, and the same can be said for telescopes. Witness the success of…
Greedy Galaxies Gobbled Gas, Stalling Star Formation Billions Of Years Ago
Like millionaires that burn through their cash too quickly, astronomers have found one factor behind why compact elliptical galaxies stopped…
What Fuels The Engine Of A Supermassive Black Hole?
If you could get a good look at the environment around a supermassive black hole -- which is a black…
“Vampire” Galaxy Sucks Star-Forming Gas from its Neighbors
What happens when a galaxy doesn't have enough hydrogen to support its stellar production process? Why, it sucks it from…
Cloudy Weather Led To ‘Fluke’ M82 Supernova Discovery
In a rare example of cloudy weather helping astronomy rather than hurting it, the team that found M82's new supernova…
‘Cosmic Flashlight’ Makes Gas Glow Like A Fluorescent Light Bulb
Funny how a single quasar can illuminate -- literally and figuratively -- some of the mysteries of the universe. From…