1–20 of 280 results

Cosmology

Dark Matter–Dominated Galaxies in the Early Universe

Small galaxies in the early universe might have had centers dominated by dark matter, according to new research.

Cosmology

Trio of Early Galaxies Test Our Ideas of Cosmic Evolution

Some galaxies hailing from the infant universe may already hold vast populations of old stars.

Early spiral galaxies

Galaxies

Spiral Galaxies May Be a Dime a Dozen in the Early Universe

A new study with data from the James Webb Space Telescope found that galaxies may have started forming spirals far earlier than astronomers previously thought.

Image showing most distant galaxy known

Cosmology

Webb Telescope Finds Strangely Bright Galaxies at Cosmic Dawn

Another record-breaker: Two galaxies date to only 300 million years after the Big Bang. How did they grow so big and bright so quickly?

Euclid's five images

Stellar Science

Euclid’s Revolutionary New Images

The Euclid mission has released five new panoramas of celestial objects that are stunning in both their breadth and depth.

Spiral galaxy with a bustling core, Webb's view shows orange-bright dust at top left, Hubble's view shows stars at bottom right

Galaxies

Webb Telescope Unveils 19 Galaxies in a New Light

A James Webb Space Telescope survey known as PHANGS has revealed exquisite, just-published details in 19 nearby galaxies.

JWST deep-field image showing many galaxies

Galaxies

The Milky Way Might Have Started Out Shaped Like a Pickle

Faraway dwarf galaxies in the universe's distant past — which will become modern Milky Ways — have an unexpectedly stretched-out appearance.

a fuzzy orb with rainbow stripes of red, yellow, green, and blue, against a dark background with white dots

Galaxies

Astronomers Discover “Invisible” Galaxy

A radio survey has serendipitously uncovered a galaxy with no visible stars.

Odd Radio Circle (ORC) 1

Galaxies

Odd Radio Circles: The Remnants of Furious Galactic Winds

New evidence suggests extreme starbursts and furious galactic winds are at the heart of odd radio circles (ORCs).

a light colored shape with veins running through it against a background of stars

Galaxies

JWST Reveals Distant “Galaxy” Is Six-way Galactic Crash

Peering deep into the past, the James Webb Space Telescope’s keen detectors are revealing unprecedented details of some of the oldest structures in the universe.

Photo of Large Magellanic Cloud shows a fuzzy barred center with fuzzy shells on the left and right

Galaxies

Astronomers Find 100,000-light-year Bow Shock in the Milky Way’s Outskirts

New simulations showed astronomers where to look for evidence of a dwarf galaxy's bow shock as it crashes through the Milky Way's halo.

Milky Way halo pictured as football shaped

Cosmology

Dark Halos and Warped Disks

Galaxies are embedded within halos of dark matter, and the tilt of those halos can affect the galaxy's stellar halo and stellar disk.

Galaxy cluster

Galaxies

Webb, Hubble Telescopes Team Up to Create "Most Colorful View of the Universe"

The Hubble and Webb Space Telescopes have revealed a bounty of galaxies in a pair of colliding clusters, capturing twinkling lights within.

Horsehead Nebula

Galaxies

New Cosmology Probe Presents First, Stunning Images

The Horsehead Nebula and other stunning scenes highlight the talents of the just-launched Euclid mission. The telescope will reach into the depths of the cosmos to understand dark matter and dark energy.

composite showing an ultra-diffuse galaxy in color surrounded by background shown in black and white

Cosmology

Ghost-like Galaxy Defies Dark Matter Model

Astronomers have discovered a large but very dim ghost-like galaxy. Its existence challenges our notions of dark matter.

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

Cosmology

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.

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