galaxies
Astronomers Catch a Galactic Threesome in the Act
An enormous and incredibly luminous distant galaxy has turned out to actually be three galaxies in the process of merging…
A Cosmic Intruder Grabbed Hot Gas From This Galaxy Group
So galaxy group NGC 5044 was just sitting quietly by itself a few million years ago when galaxy NGC 5054 decided…
Taking Measure: A ‘New’ Most Distant Galaxy
"The farthest galaxy yet seen!" Haven't we heard that one before? (See here and here, for example.) While it's true…
Here’s A Nine-Billion-Year Old Gravitational Lens In Space
Here's a picture of what deflected light looks like from 9.4 billion years away. This is the most faraway "gravitational…
ALMA Peers Into Giant Black Hole Jets
Did you ever wonder what it would be like to observe what happens to a galaxy near a black hole?…
Masked Starbirth Mapped In New Milky Way Survey
Stars are born in private. Hidden in dust and gas clouds, these bright beacons in the universe slowly coalesce. All…
Tranquil Galaxy With Petals Shows Clues To A Violent Past
Across the universe, some 350 million light-years away, lies a galaxy that looks like it has white rose petals. Don't…
Keck Spots A Galaxy Fueled With Ancient Gas
"Primordial hydrogen" sounds like a great name for a band. It's also a great thing to find when you're looking…
Stars in this Jam-Packed Galaxy are 25 Times Closer Together than in the Milky Way
Meet galaxy M60-UCD1. This is not your average, every day, ordinary galaxy. First of all, it’s what is known as…
Supermassive Black Holes Keep Galaxies From Getting Bigger
It's long been a mystery for astronomers: why aren't galaxies bigger? What regulates their rates of star formation and keeps…