SUNSET: 
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.
The First Stars Weren’t Born Alone
New evidence suggests the first stars to shine in the universe formed in groups.
The Universe Is Too Smooth By Half
Results from a complex new analysis support cosmologists’ suspicions that something is missing from our understanding of the universe.
The James Webb Space Telescope Is Finding Too Many Early Galaxies
Images and spectra from the James Webb Space Telescope suggest that the first galaxies in the universe are too many or too bright compared to what astronomers expected.
Tentative Evidence of the First Generation of Stars
Scientists have detected something unusual around a distant quasar — perhaps the first real evidence of a first-generation star.
Webb Telescope Shatters Distance Records, Challenges Astronomers
Distant galaxies in Webb images suggest we need to rethink star and galaxy evolution in the early universe.
Dark Matter Remains Elusive – For Now
The first run of a new dark matter experiment turns up nothing — but that still tells us something.
Hubble Image Reveals Possible Quasar Forerunner
A distant object in a deep Hubble Space Telescope field could be in transition from ordinary galaxy to brilliant beacon of light.
Meet Earendel, the Most Distant Star Astronomers Have Observed
The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth — the most distant star known.
No Signal from Cosmic Dawn
Four years after one experiment found tentative signs of the "cosmic dawn," the era of the first stars, another experiment finds nothing.
How Galaxies Lose Their Dark Matter
A careful study of cosmological simulations shows that dark matter–less galaxies aren't impossible — just really rare.
