Astronomy
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HETDEX Astronomers Unveil the Largest 3D Map of Hydrogen Light in the Early Universe, Revealing a Hidden Sea of Cosmic Structure
A team using the Hobby-Eberly Telescope processed 600 million spectra to build the first large-scale intensity map of Lyman-alpha emissions from 9 to 11 billion years ago, exposing faint galaxies and intergalactic gas invisible to conventional surveys.
MeerKAT Detects the Most Distant Hydroxyl Megamaser Ever Observed, Eight Billion Light-Years Away
South Africa's MeerKAT radio telescope has discovered a record-breaking hydroxyl gigamaser in a merging galaxy system, shattering the previous distance record by a factor of two.
Interstellar Comet 3I/ATLAS Reveals Prebiotic Chemistry as It Heads for Jupiter Encounter
Six months of observations of the third interstellar object ever detected have uncovered water, methane, and hydrogen cyanide in its coma--and a Jupiter flyby on March 16 could yield the closest-ever look at an interstellar visitor.
Webb Maps Uranus's Upper Atmosphere in 3D, Revealing Auroral Bands Shaped by the Solar System's Strangest Magnetosphere
A 15-hour JWST observation has produced the first three-dimensional map of Uranus's ionosphere, confirming decades-long atmospheric cooling and exposing how the planet's tilted, offset magnetic field sculpts complex auroral structures unlike any seen elsewhere in the solar system.
Hubble, Euclid, and Subaru Discover a Galaxy That Is 99% Dark Matter—Detected Only by Its Globular Clusters
CDG-2, a near-invisible galaxy 300 million light-years away, is the first detected solely through its globular cluster population. Roughly 99% of its mass is dark matter.