The Galaxy Survey Stranger That Turned Out to Be a Planet-Mass Drifter
A red speck in JWST’s deep galaxy survey proved to be a nearby, planet-mass Y dwarf—with an atmosphere current models struggle to explain.
Space
Why Does a Young Binary’s Hot Gas Retreat Between Accretion Bursts?
JWST and ground-based spectra reveal why DQ Tau’s hot molecular gas may retreat between stellar feeding bursts—and what remains unexplained.
A Planet’s Rings Could Make It Shine—and Mislead Our Telescopes
Exoplanet rings may boost a planet’s reflected light enough to reveal it—but also distort estimates of its size, brightness, and atmosphere.
Is This Black Hole Finally Ending Its 34-Year Outburst?
A decades-long black-hole outburst is fading, but thick gas hides its X-rays. Radio clues suggest quiescence—not a settled verdict.
A Magnetar’s Blast May Leave Neutrons, Not Heavy Elements
Simulations suggest magnetar flares eject crust that freezes mostly into helium and free neutrons, sharply limiting their heavy-element yield.
A New Simulation Traces How Cosmic Rays Could Steady Early Galaxies
A new galaxy simulation links cosmic rays, bursty star formation and changing winds to explain how early galaxies may have grown.
How Topology Can Read the Clues Hidden Across Cosmic Dawn
Persistent homology, a tool from topology, may help astronomers read early-universe galaxy patterns and sharpen forecasts of cosmic reionization.
A Cosmic Double Check Could Test Einstein’s Gravity Anew
A microlensing-and-orbit method could test Einstein’s gravity in weak fields by weighing the same distant binary stars two different ways.
A Planet’s Helium Headwind Could Reveal Its Magnetic Ties
A helium outflow detected around TOI-3884b may reveal how stellar radiation and magnetic fields reshape escaping planetary atmospheres.
A Red Giant’s 55-Day Pulse May Betray Its Hidden Partner
An 80-year light record reveals a red giant’s 55-day pulse in near lockstep with its yearlong cycle, hinting at an unseen companion.
A Methane-Rich Planet May Not Need a Soot-Rich Interior After All
A new atmospheric model asks whether methane-rich sub-Neptunes need carbon-rich interiors—or whether water and planetary chemistry tell a different story.
Meteorites May Preserve a Cosmic-Ray Map of the Sun’s Birth
Meteorite beryllium may preserve a cosmic-ray clue to the Sun’s birth, but uncertain particle transport keeps its galactic birthplace unsettled.
A White Dwarf’s Strange Gas Disk May Be Fed by a Dying Planet
A young white dwarf’s strange gas disk may be fed by a Neptune-like planet losing its atmosphere—but key clues remain unresolved.
The Moon Could Turn One Orbiter Into a 100-Kilometer Radio Telescope
A lunar orbiter could use reflections from the Moon to build a virtual radio telescope and explore the low-frequency sky hidden from Earth.
A Quasar’s Flicker Could Become a Ruler for Cosmic Expansion
A new method mines quasar flickers for cosmic distances, using Gaia-like simulations while confronting the calibration hurdles still ahead.
Why Uranus May Have Been Caught in a Radiation-Belt Storm
A Uranus flyby captured an oddly powerful electron belt. A comparison with Earth suggests a solar-wind storm may explain why.
A Comet’s Last Seconds May Decide Whether Life Gets Its Start
Simulations suggest comets rarely delivered useful hydrogen cyanide to early Earth, while Mars may have offered gentler conditions for chemical cargo.
A Megapixel Infrared Sensor Learns to Count One Photon at a Time
A megapixel HgCdTe sensor resolves infrared photon arrivals at 70 K, offering a new path to low-noise astronomy.
A Black Hole Census Could Reveal the Growth Rules No One Can See
A statistical-physics framework could turn black-hole population snapshots into clues about how these cosmic objects grow across time.
A Two-Telescope Trick Could Bring Far-Infrared Worlds Into Focus
A laboratory interferometer combines two apertures and a scanning spectrometer to test sharper, frequency-resolved far-infrared space imaging.