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Comets

3I/ATLAS Interstellar Comets 3I/Atlas C/2025 A6 (Lemmon) C/2023 A3 (Tsuchinshan-ATLAS) Observation Techniques C/2025 A6 Lemmon Comet C/2023 A3 Dark Comets Comet 12P/Pons-Brooks

7 ARTICLES

12h ago

Asteroid 1998 SH2 Reclassified as Comet P/1998 SH2

Precision orbital measurements followed by deep telescope imaging show weak outgassing shifted its path, revealing a practical way to find hidden dark comets.

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4 ARTICLES

6d ago

Long-Tracked Near‑Earth Object 1998 SH2 Reclassified as Comet

4 ARTICLES

2w ago

Interstellar Comet 3I/ATLAS Found to Be Older Than the Sun

19 ARTICLES

4w ago

Interstellar Comet 3I/ATLAS Shows Ancient, Cold Origin in JWST and Ground Spectra

8 ARTICLES

last mo.

SETI Radio Search Finds No Alien Technology on Interstellar Comet 3I/ATLAS

3 ARTICLES

2mo ago

Interstellar Comet 3I/ATLAS Shows Extreme Heavy-Water Signal, Pointing to an Ultra‑Cold Origin

8 ARTICLES

2mo ago

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

15 ARTICLES

4mo ago

ALMA Maps Show Interstellar Comet 3I/ATLAS Is Exceptionally Methanol-Rich

3 ARTICLES

6mo ago

NASA Resumes Search for Silent MAVEN Orbiter as Odds of Recovery Diminish

9 ARTICLES

6mo ago

Impact Alert Withdrawn as Suspected Asteroid Reidentified as Interstellar Comet 3I/ATLAS

5 ARTICLES

6mo ago

Potential 'Great Comet of 2026' Set for April 20 Sun Flyby and April 27 Earth Approach

5 ARTICLES

7mo ago

NASA Scientist Proposes 5 BC Comet as Star of Bethlehem in Peer-Reviewed Study

6 ARTICLES

7mo ago

NASA Astronomer Revives Comet as Plausible 'Star of Bethlehem' Candidate

6 ARTICLES

7mo ago

Ursid Meteor Shower Peaks Tonight, The Year’s Final Display

Comets

Asteroid 1998 SH2 Reclassified as Comet P/1998 SH2

Long-Tracked Near‑Earth Object 1998 SH2 Reclassified as Comet

Interstellar Comet 3I/ATLAS Found to Be Older Than the Sun

Interstellar Comet 3I/ATLAS Shows Ancient, Cold Origin in JWST and Ground Spectra

SETI Radio Search Finds No Alien Technology on Interstellar Comet 3I/ATLAS

Interstellar Comet 3I/ATLAS Shows Extreme Heavy-Water Signal, Pointing to an Ultra‑Cold Origin

Interstellar Comet 3I/ATLAS Shows Extreme Heavy-Water Enrichment, Study Finds

JWST Detects Methane From Interstellar Comet 3I/ATLAS

Brightening Comet Pan‑STARRS Enters Pre‑Dawn View for Northern Skywatchers

Rare Comet Pan‑STARRS Now Glows Before Dawn for a Short Northern Viewing Window

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Comets

Comet PANSTARRS Now Visible in Germany’s Pre‑Dawn Sky as Viewing Window Closes

Hubble Confirms First-Ever Spin Reversal of Comet 41P

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

ALMA Maps Show Interstellar Comet 3I/ATLAS Is Exceptionally Methanol-Rich

NASA Resumes Search for Silent MAVEN Orbiter as Odds of Recovery Diminish

Impact Alert Withdrawn as Suspected Asteroid Reidentified as Interstellar Comet 3I/ATLAS

Potential 'Great Comet of 2026' Set for April 20 Sun Flyby and April 27 Earth Approach

NASA Scientist Proposes 5 BC Comet as Star of Bethlehem in Peer-Reviewed Study

NASA Astronomer Revives Comet as Plausible 'Star of Bethlehem' Candidate

Ursid Meteor Shower Peaks Tonight, The Year’s Final Display

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Comets