1–20 of 265 results
Jellyfish galaxy

Galaxies

Kite-like Galaxy Trails a Million-light-year String of Gas and Star-forming Knots

A galaxy 600 million light-years away appears to be trailing gas in a string 1.2 million light-years long, but explaining its origins presents a challenge.

Nova Persei expansion

Explore the Night with Bob King

Time-lapse Animations Reveal a Universe in Transformation

Deep-sky objects may appear static throughout our lifetime but by carefully "blinking" archival and current images we can discern real changes in their appearance.

Captured globulars

Explore the Night with Bob King

See Summer's Best “Gobbled” Globulars

Mergers between the Milky Way and long-ago dwarf galaxies have enriched our skies with dozens of iconic globular clusters. Many are visible in small telescopes.

Field of galaxies with spiky

Galaxies

Webb Telescope Tracks Universe's First Light

New results from the James Webb Space Telescope find that radiation from ordinary galaxies cleared the primordial haze left over from the Big Bang, allowing the first light to shine through the early universe.

Artist's impression of AGN

Black Holes

Even Lonely Black Holes Need to Eat

Astronomers have found supermassive black holes in smaller galaxies are actually more likely to light up when they’re isolated in vast, cosmic voids.

OJ 287 binary black hole

People, Places, and Events

Signal Found from Supermassive Duo's Second Black Hole

Astronomers have long suspected that a distant quasar harbors not one but two supermassive black holes. They've now detected OJ 287's second black hole.

Galaxies spot a black field

Galaxies

James Webb Space Telescope Uncovers Hundreds of Galaxies in Early Universe

In the JWST version of the Hubble Deep Field, astronomers are discovering what galactic life was like in the earliest years of the universe.

Disk galaxy that's brighter at its rim

Galaxies

Red Galaxies at Night, Astronomers' Delight: A Look at the “Hubble-Dark” Universe

JWST images of early galaxies have turned up a population of flat, red disks that may have been entirely missed by previous surveys.

Galaxies

“Rogue Black Hole” Could Be Something Much Simpler

An unusual streak of stars thought to have formed in the wake of a wandering supermassive black hole might just be a spiral galaxy seen edge-on.

Faint, fuzzy dots among galaxies speckled on a black field

Galaxies

The James Webb Space Telescope May Have Spotted a Baby Galaxy Merger

New JWST images reveal that one of the most distant objects ever observed is actually two baby galaxies on a possible collision course.

Galaxies

Distorted Galaxy Hints at the Nature of Dark Matter

Astronomers analyzed the gravitationally lensed image of a distant galaxy to test the nature of dark matter.

Black field spotted with galaxies

Cosmology

What the Discovery of Massive Early Galaxies Could Mean for Cosmology

JWST's detection of early galaxies that are far more massive than astronomers had expected could mean we need to rewrite our understanding of the cosmos.

3C 297

Galaxies

This Galaxy Is Powerful, But Lonely Too

A large elliptical galaxy spewing a black hole–powered jet might have eaten its neighbors, leaving it on its own.

Infrared view of delicate spiral galaxy IC 5332

Galaxies

Generations of Stars Shape Their Galaxies, Webb Images Reveal

James Webb Space Telescope images reveal an intricate network in nearby galaxies, influenced by generations of star formation.

Black field dotted with galaxies

Galaxies

“The Sparkler” Might be Our Milky Way’s Long-Lost Twin

Astronomers are using compact groups of stars to probe the history of a galaxy in the adolescent universe dubbed "The Sparkler."

Donatiello II appears as a smattering of stars on a black field dotted with background galaxis

Galaxies

Italian Amateur Astronomer Discovers Dwarf Galaxies

Three dwarf galaxies around the Sculptor Galaxy have come to light thanks to the work of an amateur astronomer.

Zoom ins on massive galaxy cluster show tiny red dots, distant galaxies that resemble nearby

Galaxies

New Observations Reveal Galaxies Near and Far

Astronomers at this month's big winter conference explored intriguing small galaxies at various points in cosmic history.

Intracluster light with Hubble

Galaxies

Hubble and Webb Image Galaxies’ Lost Stars

Deep images of galaxy clusters reveals the light of wandering stars. What set these stars free from their hosts?

Green arc floats above the Andromeda Galaxy

Galaxies

Amateur Astronomers Find Glowing Gas Arc Near Andromeda

An arc that glows green thanks to doubly ionized oxygen appears near the Andromeda Galaxy in a photo obtained by amateur astronomers.

swirl with many arms

Galaxies

Familiar Fluffy Triangulum Galaxy Has Hidden, Two-Armed Pattern

Astronomers have discovered that one of the Milky Way’s nearest galactic neighbors has dramatically changed its looks in the recent past.

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