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Comets

3I/ATLAS Characteristics Interstellar Comets Interstellar Objects Comet 3I/ATLAS Halley's Comet Oort Cloud Comet Discovery Swift-Tuttle 3I/Atlas

NASA Maps May Skywatching: Eta Aquariids, Moon–Venus Pairing, Blue Moon

Practical guidance helps skywatchers plan clear views despite bright moonlight during the early meteor peak.

Hubble Spots First Known Comet Spin Reversal

Hubble Accidentally Captures Comet C/2025 K1 Fragmenting in Real Time

ALMA Finds Interstellar Comet 3I/ATLAS Strikingly Methanol‑Rich With Unusual Outgassing

ALMA Reveals 3I/ATLAS Is Exceptionally Methanol‑Rich, Indicating a Heterogeneous Interstellar Comet

First Comet of 2026, C/2026 A1 (MAPS), Is on Course to Plunge Into the Sun on April 4

SPHEREx Finds Interstellar 3I/ATLAS Has Become a Fully Active Comet After Perihelion

No Alien Signals Detected From Interstellar Visitor 3I/ATLAS in Green Bank Scan

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

Russia’s 2026 Sky Guide: Two Visible Eclipses and Two Early‑Year Comets

Interstellar Comet 3I/ATLAS Shows Signs of Global Ice Volcanoes, Study Finds

3I/ATLAS Unveils Rapidly Growing Tail in New Observations

Orionids Peak Under New-Moon Skies Tonight

Interstellar Visitor 3I/ATLAS Shows Unprecedented Sunward Jet as Closest Mars‑Orbiter Data Arrive

Orionid Meteor Shower Set to Peak Under Moonless Skies Next Week

Swan and Lemmon Comets Near Earth Next Week as Interstellar 3I/ATLAS Stays Out of Sight

Viral Mars Rover Image of 3I/ATLAS Draws Fresh Scrutiny as Scientists Flag Camera Artifact

Orionid Meteor Shower Begins, With Peak Oct. 21–22 Under Moonless Skies

Swan25B and Lemmon to Grace the Evening Sky in October

Hubble and Infrared Observations Show 3I/ATLAS Is an Active Interstellar Comet