Comets and Asteroids

VLT Observations Of Interstellar Comet 3I/ATLAS II. From quiescence To Glow: Dramatic Rise Of Ni I Emission And Incipient CN Outgassing At Large Heliocentric Distances

• Status Report
• August 29, 2025

Interstellar

JWST Detection Of A Carbon Dioxide Dominated Gas Coma Surrounding Interstellar Object 3I/ATLAS

• Status Report
• August 26, 2025

SETI & Technosignatures

Technosignature Searches Of Interstellar Objects

• Status Report
• August 26, 2025

News Summary Archives

SPHEREx Discovery of Strong Water Ice Absorption and an Extended Carbon Dioxide Coma in 3I/ATLAS

• Status Report
• August 22, 2025

Imaging & Spectroscopy

Update: Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS

• Press Release
• August 20, 2025

Interstellar

Simultaneous Visible Spectrophotometry Of Interstellar Object 3I/ATLAS With Seimei/TriCCS

• Status Report
• August 13, 2025

Astrochemistry

Water Detection in the Interstellar Object 3I/ATLAS

• Press Release
• August 7, 2025

Interstellar

Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS

• Status Report
• August 7, 2025

Interstellar

Hubble Makes Size Estimate Of Interstellar Comet 3I/ATLAS

• Press Release
• August 7, 2025

Comets and Asteroids

Precovery Observations of 3I/ATLAS from TESS Suggests Possible Distant Activity

• Status Report
• July 31, 2025

Interstellar

Assessing Interstellar Comet 3I/ATLAS With The 10.4 m Gran Telescopio Canarias And The Two-meter Twin Telescope

• Status Report
• July 25, 2025

Astrochemistry

Spectroscopic Characterization Of Interstellar Object 3I/ATLAS: Water Ice In The Coma

• Status Report
• July 22, 2025

Interstellar

NSF-DOE Vera C. Rubin Observatory Observations of Interstellar Comet 3I/ATLAS (C/2025 N1)

• Status Report
• July 22, 2025

Comets and Asteroids

X-SHOOTER Spectrum Of Comet C/2025 N1 (3I/ATLAS): Insights Into A Distant Interstellar Visitor

• Status Report
• July 20, 2025

Interstellar

Gemini North Observes Comet 3I/ATLAS

• Press Release
• July 17, 2025

Interstellar

From A Different Star: 3I/ATLAS In The Context Of The Ōtautahi-Oxford Interstellar Object Population Model

• Status Report
• July 15, 2025

Interstellar

VLT Timelapse Of 3I/ATLAS, A New Interstellar Object

• Status Report
• July 13, 2025

Interstellar

Interstellar Object 3I/ATLAS May Be The Oldest Comet Ever Seen

• Press Release
• July 12, 2025

Interstellar

Interstellar Comet 3I/ATLAS: Discovery And Physical Description

• Status Report
• July 11, 2025

Interstellar

Initial VLT/MUSE Spectroscopy Of The Interstellar Object 3I/ATLAS

• Status Report
• July 8, 2025