1–20 of 223 results
Molten Ring

Galaxies

60-second Astro News: Magnified Galaxies Provide Window to Early Universe

Astronomers use cosmic magnifying lenses to peer into the universe's distant past.

Zoomed-in view of barred spiral galaxy NGC 4921

Galaxies

Watch Black Holes Grow, Galaxies Fall

Watch black holes grow and galaxies fall — astro photos and visualizations to get you through the week.

Orphan cloud seen in X-rays and visible light

Galaxies

Lost & Found: Milky Way-size "Orphan Cloud"

Astronomers have found a giant gas cloud, likely stripped from its parent galaxy long ago, in a cluster 330 million light-years away.

Galaxies

Galaxies That Evolve Together But Don’t Stay Together

A study of 36 dwarf galaxies within a volume of space spanning 13 million light-years show they all have remarkably similar histories despite the vast distances between them.

two colorful radio gets stream out either side of a central, invisible point

Galaxies

From Starving Black Holes to Warped Galaxies

Hot topics from the American Astronomical Society summer meeting range from colliding galaxies, to warped galaxies, to starving black holes.

wo spiral galaxies appear as light colored swirls on either side of an orange star.

Galaxies

Astronomers Look into the Past of Local Dwarf Galaxies

A combination of simulations and observations indicates that galaxies like the Large Magellanic Cloud control when punier dwarfs plunge into large galaxies.

Galaxies

Not All Star-forming Clouds Are The Same

Astronomers have created the first high-resolution maps of the big, dense gas clouds that form stars within galaxies.

Galactic center

Solar System

Astronomy in Pictures: Unraveling Galaxies and Clyde's Spot

This week in astronomy pictures: Peer into our galaxy's busy core, watch Clyde's Spot unravel at Jupiter, and see a stunning Hubble photo of a lopsided galaxy.

HD 122563 closeup

Bright Stars

In Search of Ancient Suns

We track down and admire five of the most ancient stars in the universe.

DF2, an apparently dark matter-less galaxy

Galaxies

New Distances Support Idea of Dark Matter-less Galaxies

New distances to two dwarf galaxies with unusually spread-out stars support the idea that these galaxies have little to no dark matter.

NGC 1365

Galaxies

Astronomers Use AI to Investigate Quasars and Galaxies Galore

New applications of machine learning have enabled astronomers to classify 27 million galaxies and pick out a dozen rare quadruply lensed quasars.

Centaurus A

Pro-Am Collaboration

Amateur Astronomers Reveal Long-Ago Galaxy Mergers

The images from five Brazilian amateur astronomers have captured Hubble-level details in galaxies, laying the ground for future work in understanding their histories. Want to join the fun?

Tucana II

Galaxies

Our Tiny Galactic Neighbor Hosts Ancient Stars

New observations show ancient stars lining the edges of the ultra-faint dwarf galaxy Tucana II, a tiny satellite of the Milky Way.

Protocluster

Galaxies

Astronomers Spot Galaxies Clustering in Early Universe

Astronomers have discovered a cluster of galaxies coming together just 770 million years after the Big Bang.

New Horizons

Galaxies

What New Horizons Found in Deep Space — And Why It Matters

NASA’s mission to the outer solar system has found more light than expected. That could mean more galaxies in the visible universe than we thought— or less, depending on who you talk to.

Gamma-ray burst

Stellar Science

Astronomers Find Most Distant Gamma-ray Burst Yet

From the farthest-known galaxy in the observable universe comes the brightest and most energetic of events: a possible gamma-ray burst.

Side-view of Heracles' remains

Galaxies

Astronomers Discover Galactic “Fossil” Inside the Milky Way

Thousands of stars that once belonged to an ancient galaxy are inside our own.

Cosmology

A Dark Matter-less Galaxy, Explained (Maybe)

An international team of astronomers has explained the lack of dark matter in a distant dwarf galaxy — another galaxy stole it.

Like moths in the lamplight

Galaxies

Star Clusters Reveal the "Kraken" in the Milky Way's Past

Astronomers have reconstructed the Milky Way's merger history, finding that our galaxy has absorbed five large satellite galaxies in the last 12 billion years.

ALPINE galaxies

Galaxies

60-second Astro News: Mature Infant Galaxies & A Possibly Rogue Planet

This week in astronomy news: Distant galaxies that look older than they are and a terrestrial planet that might be drifting through our galaxy.

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