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Jupiter-Mass Companion Detected Orbiting Brown Dwarf in Nearby System

The claim forces astronomers to seek astrometry or direct imaging to measure the object's true mass and orbit.

Webb Detects Hidden Giant Planet Beta Pictoris d Inside Debris Disk

Simulations Suggest Milky Way Disk Flipped After Ancient 'Gaia Sausage' Collision

Astronomers Infer Magnetic Fields on Seven Ultra‑Hot Jupiters

JWST Survey Delivers Most Detailed Map of the Cosmic Web to Date

Webb Reveals Non-Rotating Massive Galaxy in the Early Universe

New Galaxy-Group Analyses Put Local Expansion Rate at About 64 km/s/Mpc

Astronomers Tie Distant Star’s Chaotic Fading to Evidence of a Planetary Collision

Study Ties ASASSN-24fw’s 200-Day Fade to Ringed Brown Dwarf or Super-Jupiter

Kepler Archive Reveals Earth-Size Exoplanet Candidate Near Habitable Zone

AI Sifts 35 Years of Hubble Images, Flagging Over 1,300 Cosmic Anomalies

New Spectrograph Reveals Mars-Mass Iron Bar in the Ring Nebula

White Dwarf Without Disk Has Driven Thousand-Year Bow Shock, VLT Study Finds

JWST and ALMA Reveal Early Massive Galaxy Quenched by Black Hole Starvation

New Studies Challenge M–Sigma for Giants and Deliver Most Detailed X-Ray Spectrum Yet

South Korean Study Claims Cosmic Expansion Is Slowing, Challenging Dark Energy Orthodoxy

Webb Finds Carbon-Rich Atmosphere on Lemon-Shaped Planet Orbiting a Pulsar

Gravitational-Lens Time Delays Deliver New Hubble Constant, Deepening the Tension

Astronomers Report Tentative Exomoon Around HD 206893 B Using Precision Astrometry

Webb Maps Four Dust Spirals and Confirms Third Star in Rare Apep Wolf-Rayet System