Webb Telescope Finds Dwarf Galaxies Lit Up the Early Universe
Faint, small galaxies ionized the opaque fog that obscured the early universe.
Astronomers Find "Big Ring" 1.3 Billion Light-Years Across
Standard cosmological scenarios might not explain the breadth of a newly discovered cosmic structure.
Largest-ever Catalog of X-ray Sources Tests Cosmology
Results from a brand-new high-energy observatory are rocking the field of cosmology. In particular, a study of more than 5,000 galaxy clusters relieves tension in the standard cosmological model.
Using Ancient Ultraviolet Light to Probe Theories of Cosmology
By studying the formation and evolution of galaxies in the early universe, researchers seek to test the predictions of our leading theory of cosmology.
How Strong Is Dark Energy? Intriguing Findings from New Supernova Catalog
The largest sample of Type Ia supernovae ever made by a single telescope sheds light on dark energy.
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.
Astronomers Discover 562 New Candidate Strong Lenses With Machine Learning
An international research collaboration trained computers to sift through millions of images for cosmic treasure.
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.
Largest-ever Computer Simulation of the Universe
The Flamingo simulations are not only the largest but also the most all-encompassing simulations of the universe, from 13.75 billion years ago to today.
In a First, Astronomers Directly Image the Cosmic Web
Astronomers have directly imaged emission from the cosmic web, the filamentary structure that underlies the universe.
Galaxies Outline Bubble 1 Billion Light-Years Wide in Space
A newfound cosmic alignment of galaxies challenges fundamental ideas about the nature of our universe.
Dark Matter Clumps Float Between Galaxies, Data Shows
Astronomers have found clumps of dark matter 30,000 light-years wide in the space between galaxies in the distant universe.
Another Early-Universe Mystery: JWST Spies Dust at Cosmic Dawn
Dust is usually the product of generations of star formation. So what is all this dust doing in the early universe, just a few hundred million years after the Big Bang?
Some Astronomers Claim Dark Star Candidates in Webb Images
Three distant galaxies imaged by the James Webb Space Telescope might actually be "dark stars" powered by dark matter annihilation, claims a team of astronomers.
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.
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.
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.
Replay of Star’s Death Sheds Light on Universe’s Expansion
A cosmic lens magnified the light of an exploding star. Now, astronomers are using observations of that supernova to calculate the universe’s current rate of expansion.
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.
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.