A new X-ray look at the Cassiopeia A supernova remnant reveals an unexpected excess of chlorine and potassium, forcing astronomers to rethink how exploding stars manufacture the ingredients of oceans,...
Astronomers have found a fully formed spiral galaxy in the infant universe—a Milky Way twin that matured billions of years ahead of schedule, forcing a rewrite of how cosmic structure,...
An international team of astronomers has uncovered one of the largest rotating structures ever observed in the universe—a razor-thin cosmic filament spanning 5.5 million light-years that challenges our fundamental understanding...
A groundbreaking new map from the Atacama Cosmology Telescope reveals the universe's earliest light with unprecedented clarity, exposing the invisible cosmic web that shaped galaxies and fundamentally challenging our understanding...
A groundbreaking analysis of Fermi telescope data has revealed a faint, halo-shaped glow of gamma rays around the Milky Way's center that may represent the first direct observation of dark...