SUNSET: 
"Invisible" Galaxies Found in the Young Universe
Astronomers have discovered galaxies that have escaped detection until now, uncovering a missing link in galaxy evolution.
Why Are Two Ghost Galaxies Missing Dark Matter?
Ultra-diffuse galaxies are usually dark matter-rich. But astronomers have discovered two of these galaxies that lack dark matter altogether.
Tracing the Cigar Galaxy's Superwind
NASA’s SOFIA airborne observatory has returned a striking far-infrared view of the Cigar Galaxy and its “galactic superwind.”
Radio Survey Maps Hundreds of Thousands of New Galaxies
The LOFAR survey, based in The Netherlands, has released a bonanza of new sources. And with only 2% of the sky covered so far, this is only the beginning.
Explore the Night with Bob King
Deep-Sky Observing Without Equipment, Part II — The Winter Sky
Really want to see what your eyes can do? Leave the telescope at home and join me for a naked-eye tour of the late winter sky.
How to Turn Off a Galaxy’s Star Formation
New observations by the Atacama Large Millimeter/submillimeter Array (ALMA) provide a close look at a galaxy that may be in the process of shutting down its star formation.
The Magellanic Clouds Might Once Have Been a Trio
The Milky Way's two largest companion galaxies may have once been a threesome — but new data from the Gaia satellite leaves the satellites' history an open question.
60-Second Astro News: Starbirth, Stardeath, and the Evolution of Galaxies
Starbirth and stardeath light up a nearby galaxy while faraway galaxies twist and bend in these new images from NASA's Hubble and Chandra space observatories.
Andromeda Collided with Galactic Sibling Billions of Years Ago
A new study says our neighbor galaxy’s big stellar halo and stellar evolution are due to a major collision that ended 2 billion years ago.
Explore the Night with Bob King
M13 with a Side of Galaxies, Please
The Great Hercules Cluster is on everyone's observing list this summer. But there's lots more to see within a stone's throw of this grand object — like 20 galaxies!
Explore the Night with Bob King
Meet the Shy Side of the Local Group
The Local Group galaxies and their kin are the building blocks of the most magnificent galaxies in the universe. Let them inspire your winter nights.
Explore the Night with Bob King
Are You Ready, Willing, and Abell?
A cosmic rabbit hole in the tail of Leo will take you to Abell 1367, a wonderland of galaxies more than 300 million light-years from Earth. Step in and lose yourself in the vastness.
Super Spiral Galaxies
Astronomers have identified 53 “super spirals” — spiral galaxies that are huge and incredibly luminous — as part of a project exploring archived observations.
A Galaxy Hit-and-Run
Ripples found in the Milky Way’s disk reveal our galaxy survived an ancient hit-and-run. Now, astronomers might have caught the culprit.
Question Reopened: How do Galaxies Grow?
Evidence from observations sheds doubt on cosmic cannibalism as a source for galaxy growth, suggesting that instead galaxies grow by pulling in gas from the intergalactic medium.
How Many Galaxies Are There in the Universe?
Astronomers determine the number of galaxies in the universe by counting up the number visible in a tiny portion of the sky, and then accounting for all the regions of the observable universe. A 2013 study estimates that there are 225 billion galaxies in the observable universe.
Observing Secrets of Deep-Sky Objects Revealed
Here's how to hone your galaxy-hunting skills — and what to expect at the eyepiece.
