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Planetary Science

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

Multiwavelength data show visible dimming with an infrared spike, signaling hot debris from an impact.

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Caltech Astrophysicist Carl Grillmair Killed as 29-Year-Old Is Charged With Murder

CHEOPS Reveals 'Inside-Out' Four-Planet System Around Red Dwarf LHS 1903

NASA Confirms Pandora Exoplanet Observatory Is Healthy After Launch, Begins Commissioning

Astronomers Make First Direct Mass Measurement of a Rogue Planet

Hubble Captures Record-Breaking Chaotic Planet-Forming Disk 1,000 Light-Years Away

Hubble Spots Second Debris Cloud at Fomalhaut, Confirming Repeated Planetesimal Collisions

Early JWST Campaign Finds Stellar Noise Hindering TRAPPIST-1e Atmosphere Test

Comet Lemmon Makes Closest Approach Oct. 20–21 With Prime Viewing Under New Moon

Last Quarter Moon Draws Close to Jupiter Overnight in Easy Sky Show

Interstellar Comet 3I/ATLAS Tied to New Planet 'Seeding' Hypothesis

Hubble Spots White Dwarf Devouring Icy, Nitrogen-Rich Exo‑Pluto Fragment

Astronomers Directly Image Newborn Planet in Multi-Ringed Disk in First Clear Case

StarryStarryProcess Maps Star Spots From TESS and Kepler to Clarify Exoplanet Signals

Study Reveals Hidden Nano-Crystals in Space Ice

Active Interstellar Comet 3I/ATLAS Set for Safe Solar System Passage

Webb Reveals Silicate Clouds and Moon-Forming Disk in YSES-1 System