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Astronomy Picture of the Day - The Long Wispy Tail of Comet R3 (PanSTARRS)
NASA ^ | 14 Apr, 2026 | Image Credit & Copyright: Haythem Hamdi

Posted on 04/14/2026 12:26:16 PM PDT by MtnClimber

Explanation: Why does Comet R3 (PanSTARRS) have a wispy tail? The newest bright member of the inner Solar System, Comet C/2025 R3 (PanSTARRS) is already extending an impressive stream of glowing gas. This tail starts from an unseen central nucleus of dirty ice that is likely a few kilometers across. The nucleus is warmed by the Sun and emits a cloud of neutral gas into a coma that glows light green. Nuclear gas ionized by energetic sunlight is pushed away from the Sun by the solar wind into an ion tail that glows light blue. The wispy nature of the ion tail is caused by the constantly changing structure of the solar wind. Pictured from Rhode Island, USA two days ago, Comet R3 (PanSTARRS) shows off a many-degree ion tail. Comet R3 (PanSTARRS) is best seen before dawn from northern skies for another 10 days, after which it will be best visible from southern skies.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; c2025r3; cometc2025r3; nasa; panstarrs

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1 posted on 04/14/2026 12:26:16 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 04/14/2026 12:26:37 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 04/14/2026 12:27:49 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
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To: MtnClimber

Wow!


4 posted on 04/14/2026 1:10:12 PM PDT by Beowulf9
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To: MtnClimber

Looks like a dentist tool or one of my Dremel cutter bits.


5 posted on 04/14/2026 1:10:17 PM PDT by Deaf and Discerning
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