1–20 of 193 results
Single-looped Knife Edge Galaxy

Galaxies

The Knife Edge Galaxy Throws Astronomers For a Loop

A 2008 image captured a stunning double loop of stars around an edge-on galaxy. Now, astronomers are questioning whether one of those loops exist.

Massive, dusty, star-forming galaxy

Galaxies

What Snuffed Out Star Formation in This “Monster” Galaxy?

Astronomers have discovered a galaxy that formed five times as many stars as the Milky Way within 2 billion years after the Big Bang — but then quickly quelled any further starbirth.

Dwarf Galaxy

Galaxies

More Big Black Holes Found in Small Galaxies

In the quest to discover how massive black holes form, astronomers have spotted several of these objects in some of the smallest galaxies yet found to host them.

Hydrogen halo around young galaxy

Galaxies

How Young Galaxies Grow

A pair of recent studies sheds light on some of the universe’s earliest galaxies and how they grow.

NGC 6240 and its three black holes

Black Holes

Three Black Holes May Merge in Nearby Galaxy

New observations of a galactic crash site show that there are not just two but three supermassive black holes on the verge of union. Two of them are only 650 light-years apart, the closest pair known.

Fast radio burst as probe of a galaxy halo

Galaxies

Exotic Messenger Probes a Galaxy’s Outer Reaches

Astronomers made use of a fast radio burst, a 40-microsecond flash at radio wavelengths, to evaluate the state of the nearly undetectable gas around an intervening galaxy.

Galaxies

"Invisible" Galaxies Found in the Young Universe

Astronomers have discovered galaxies that have escaped detection until now, uncovering a missing link in galaxy evolution.

Galaxies

Peer Deep Within the Large Magellanic Cloud

A team of amateurs reveals the Large Magellanic Cloud, a galactic neighbor, in an exceedingly deep, high-resolution mosaic.

Galaxies

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.

Cigar Galaxy's Galactic Superwind

Galaxies

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.”

Galaxy cluster Abell 1314

Galaxies

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.

Spherex

Astronomy in Space with David Dickinson

NASA to Explore Early Universe, Origins of Life with SPHEREX

The SPHEREX mission will create multiple surveys of the near-infrared sky that will reveal the origins of life and perhaps the universe itself.

Rotation of Andromeda Galaxy

Galaxies

New Study Pushes Back Milky Way’s Dust-up with Andromeda

By tracing stars in other galaxies, the Gaia satellite has helped astronomers understand the relative motions of the Milky Way's galactic siblings.

Image of Small Magellanic Cloud

Galaxies

Evidence Mounts for a Magellanic Collision

Astronomers have suspected for some time that the Large and Small Magellanic Clouds collided in the recent past. The Gaia space telescope provides striking new evidence for a head-on collision.

Milky Way ancient merger

Galaxies

Ancient Merger Wreckage in the Milky Way

Mounting evidence indicates that our galaxy smashed up another smaller galaxy roughly 10 billion years ago.

Galaxies

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.

Magellanic Clouds

Galaxies

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.

BUFFALO image of Abell 370

Galaxies

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.

Galaxies

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.

Galaxies

Disentangling the History of the Magellanic Clouds

The Magellanic Clouds — two nearby dwarf galaxies easily visible to the naked eye in the southern hemisphere — are key to understanding the dynamics and evolution of the Local Group of galaxies. Can an in-depth look at these galaxies’ outer regions help us make sense of their complicated interaction history?

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