A New Way to Rebuild the Light Moving Around a Black Hole
A new image-reconstruction method helps recover motion near Sagittarius A* from simulated Event Horizon Telescope data.
Space
A Faint Atomic Echo Could Help Untangle the Universe’s Expansion
A faint scattering signal from early hydrogen and helium could help future CMB experiments test atomic physics and the Hubble tension.
When Supernova Feedback Got Stronger, Early Galaxies Grew Too Big
A JWST-mimicking simulation finds stronger supernova feedback made early galaxies too diffuse, while richer physics produced bright, compact systems.
A New Way to Find Planets in a Telescope’s Shifting Starlight
A physics-based method models JWST’s shifting starlight, improving exoplanet sensitivity and revealing 51 Eridani b at 4.3 micrometers.
A Trace of Lithium Turns One Dwarf Galaxy Into a Time Machine
A lithium survey of 209 Small Magellanic Cloud giants traces how stellar mixing and novae may shape a neighboring galaxy’s chemical history.
Could a Carbon Planet Pass for an Ordinary Rocky World?
New models trace carbon planets from graphite to diamond—and reveal why their size may still be hard to distinguish from ordinary rocky worlds.
How AI Turned Planetary Chaos Into a Handful of Useful Clues
A new study turns neural-network predictions of planetary instability into compact, readable equations—and reveals where the rules break down.
How a 3.7-PeV Photon Put Space-Time’s Rules to the Test
A gamma-ray flare from Cygnus X-3 sent PeV photons across the Galaxy, turning their survival into a test of relativity’s hidden limits.
A Detector That Finds Sky Streaks on One Telescope Can Fail on Another
A benchmark spanning five telescope datasets exposes a stubborn weakness: streak detectors can stumble when the camera or observing conditions change.
A Young Star’s Shock Lit Up Two Molecules That Should Stay Dark
JWST reveals forbidden H₃⁺ light and a CH⁺ chemical cascade in a young-star shock, exposing hot molecular gas and its unresolved physics.
A Redshift-5 Supernova Candidate Runs Hotter Than Its Expected Script
JWST found a hot, unusually luminous supernova candidate at redshift 5, challenging expectations and opening a rare window on stellar death.
A Super-Jupiter’s Atmosphere Holds a Clue From Its Birth Cloud
JWST finds deuterated methane in a cold super-Jupiter, revealing how a rare isotope may preserve clues to the icy material that built it.
At Cosmic Dawn, Half of Galaxies Had Extreme Emission Lines
JWST imaging finds extreme oxygen-and-hydrogen emission in about half of galaxies at redshift 8.3, pointing to burstier early star formation.
Space Dust’s Texture Can Keep Starlight From Releasing Water
Experiments at 12 K find that rough cosmic-dust analogs can suppress UV-driven water loss, reshaping models of interstellar chemistry.
A Small Star’s Giant Planet May Reveal How Big Worlds Form
A faint giant planet and debris disk around a young M dwarf could test competing ideas of planet formation, but its origins remain uncertain.
A Statistical Shortcut Could Speed Up Cosmic Lensing Measurements
A clever simulation shortcut could speed cosmic microwave background lensing analyses, helping researchers map matter with less computing time.
An 800-Million-Year-Old Asteroid Shower May Have Reached Four Worlds
A model links the Eulalia asteroid breakup to an ancient bombardment of the Moon and inner planets—and shows why proving its effects is hard.
A Pulsar’s Companion Changes Its Light—and Defies the Usual Models
A confirmed millisecond pulsar has a companion whose changing light curve resists simple explanations and complicates its neutron-star mass estimate.
One Galaxy’s Light Reveals a Vast, Unexpected Ionized Expanse
JWST light from one early galaxy hints at a 210-megaparsec ionized region in a universe that was still largely neutral.
A Stellar Stream Bends the Wrong Way—and Dark Matter Takes Notice
A new geometric test could use the curves of shredded star streams to tell whether dark matter halos are round or triaxial.