Standard cosmological scenarios might not explain the breadth of a newly discovered cosmic structure.
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.
By studying the formation and evolution of galaxies in the early universe, researchers seek to test the predictions of our leading theory of cosmology.
The largest sample of Type Ia supernovae ever made by a single telescope sheds light on dark energy.
An international research collaboration trained computers to sift through millions of images for cosmic treasure.
Astronomers have directly imaged emission from the cosmic web, the filamentary structure that underlies the universe.
A newfound cosmic alignment of galaxies challenges fundamental ideas about the nature of our universe.
Astronomers have found clumps of dark matter 30,000 light-years wide in the space between galaxies in the distant universe.
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?
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.
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.
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.
Astronomers analyzed the gravitationally lensed image of a distant galaxy to test the nature of dark matter.
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.