141–160 of 242 results
Abell 1689

Cosmology

Dusty Galaxy in the Early Universe

A small galaxy 700 million years after the universe’s birth has a dust reservoir that makes it look like a much older galaxy.

Teacup Galaxy

Galaxies

Tempest in the Teacup Galaxy

New observations of the Teacup Galaxy show that even black holes with wimpy radio jets can quench a galaxy's star formation. An unassuming nearby galaxy nicknamed The Teacup (more formally known as J1430+1339) hides a tempest inside. The supermassive black hole at this galaxy's center is chowing down furiously on…

CANDELS Ultra Deep Survey

Galaxies

Hubble’s Long Look at Distant Galaxies

Hubble Space Telescope observations are enlightening astronomers about the evolution of galaxies in the distant universe.

PHAT field for M31

Galaxies

Charting the Andromeda Galaxy

The Hubble Space Telescope has turned its ultraviolet, visible-light, and near-infrared eyes to the queen of galaxies, M31, capturing the biggest and sharpest image yet of our neighbor.

Coma Cluster

Galaxies

Dark Galaxies Discovered in Coma Cluster

A bizarre set of galaxies in the Coma Cluster have lost most of their stars (or star-making material), making them especially rich in dark matter.

Galaxy cluster Abell 2744

Galaxies

Ghostly Light From Dead Galaxies

Astronomers are peering into a galaxy cluster’s past, using Hubble’s Frontier Fields to measure the light from ghost stars cast adrift in galaxy collisions.

galaxy mergers create disks

Galaxies

Mergers Create Disk Galaxies

Observations from several radio telescopes reveal that, when two galaxies merge, their progeny often have gaseous disks—a hypothesis that before now didn’t have solid observational evidence.

Galaxies

Citizen Scientists Probe Early Galaxies

New data collected by Galaxy Zoo show early galaxies with central bars, providing implications about how galaxies grow.

ultracompact dwarf galaxy

Galaxies

Small Galaxy Boasts Big Black Hole

Astronomers have detected a supermassive black hole in the center of a tiny galaxy — where it has no right to be.

Quasar illustration

Galaxies

The Quasar Main Sequence

A new diagram might link the diverse visible-light characteristics of quasars to two physical properties — essentially, their accretion rate and orientation. If the analysis holds up, it could point the way toward a long-sought unification.

local supercluster

Galaxies

Laniakea: Our Home Supercluster

Astronomers have mapped the cosmic watershed and discovered a massive supercluster that extends more than 500 million light-years and contains 100,000 large galaxies. The Milky Way sits on the edge of this humongous structure.

compact star-forming galaxy

Galaxies

Building Big Elliptical Galaxies’ Cores

Astronomers are tracking down the seeds that likely grew to become today’s most massive elliptical galaxies.

Galaxies

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.

Galaxies

Dwarf Galaxies Packed a Mighty Punch

Light from the puniest galaxies played a bigger role in shaping the early universe than previously thought.

Black Holes

Gas Streamer Eclipses AGN

Astronomers have detected a high-speed, long-lasting gas streamer spewing from the active galactic nucleus of NGC 5548. This discovery might provide new insights into how supermassive black holes influence their host galaxies.

Galaxies

Spotting a Nearby Quasar’s Winds

A neighboring galaxy’s central black hole powers strong winds, allowing astronomers — for the first time — to spot those gales pushing out star-forming gas.

M22

Galaxies

Star Cluster Runs Away From Home

A hive of stars is sailing toward Earth at more than 2 million miles per hour — and racing away from the giant galaxy it used to call home.

Pro-Am Collaboration

Pro-Am Collaboration Yields Stunning Images

Amateur astronomers have teamed up with the pros to produce four stunning multiwavelength images of galaxies M101, M81, M51, and Centaurus A.

Black Holes

A New Galactic Yardstick

Astronomers have developed a new method to measure distances to bright but faraway galaxies, a tool which will help better constrain the expansion rate of the universe.

Astrobiology

Fooling with the Universe

This year’s April Fools' provides a wealth of alarming results. Catch up on all the scientific shenanigans here.

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