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Astronomers Measure Mass of a Free-Floating Planet for the First Time

A two-hour offset between Earth and Gaia views of a microlensing event provided the parallax to pin down its distance and mass.

Hubble Spots Record-Breaking, Chaotic Planet-Forming Disk ‘Dracula’s Chivito’

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Astronomers Confirm First Triple Radio AGN in Merging Galaxy Trio

2026 Sky Guide: Total Eclipse Over Iceland and Spain as NASA Targets Early-Year Artemis II

Hubble Catches Two Debris-Cloud Collisions at Fomalhaut, Recasting ‘Fomalhaut b’

NASA Details Roman Telescope’s Milky Way Map and Dark Energy Void Surveys as Launch Prep Advances

Armagh Telescope Records Ireland’s First Video of a Lunar Impact Flash

Scientists Detect Largest Known Rotating Filament in the Cosmic Web

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

Early Interferometric Images Recast Novae as Multi-Stage, Directional Eruptions

XRISM Pinpoints Chlorine and Potassium Surplus in Cassiopeia A, Challenging Supernova Models

Astronomers Map 50-Million–Light-Year Rotating Cosmic Filament Nearby

SPHERE Survey Delivers 51 Resolved Debris Disks, Revealing Planet-Shaped Rings and Prime Follow-Up Targets

UN Network Launches Global Campaign to Track Interstellar Comet 3I/ATLAS Before Dec. 19 Flyby

Saturn’s Rings Nearly Vanish This Weekend as Earth Hits Edge-On View

NASA Releases Multi-Mission Images of Interstellar 3I/ATLAS, Confirms It Is a Comet

NASA Unveils Multi‑Mission Views of Interstellar Comet 3I/ATLAS

Webb Confirms Overmassive Black Hole Feeding in a Galaxy 570 Million Years After the Big Bang

NASA Releases New 3I/ATLAS Images, Affirms Interstellar Visitor Is a Natural Comet

VLT Captures Olive-Shaped Shock Breakout in SN 2024ggi