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Astronomy Picture of the Day - New Comet SWAN25B over Mexico
NASA ^ | 16 Sep, 2025 | Image Credit & Copyright: Daniel Korona

Posted on 09/16/2025 12:30:36 PM PDT by MtnClimber

Explanation: A newly discovered comet is already visible with binoculars. The comet, C/2025 R2 (SWAN) and nicknamed SWAN25B, is brightening significantly as it emerges from the Sun's direction and might soon become visible on your smartphone -- if not your eyes. Although the brightnesses of comets are notoriously hard to predict, many comets appear brighter as they approach the Earth, with SWAN25B reaching only a quarter of the Earth-Sun distance near October 19. Nighttime skygazers will also be watching for a SWAN25B-spawned meteor shower around October 5 when our Earth passes through the plane of the comet's orbit. The unexpectedly bright comet was discovered by an amateur astronomer in images of the SWAN instrument on NASA's SOHO satellite. The comet is currently best observed in southern skies but is slowly moving north. The featured image was captured at sunset three days ago just above the western horizon in Zacatecas, Mexico.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.
1 posted on 09/16/2025 12:30:36 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 09/16/2025 12:30:56 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
Pinging the APOD list

🪐 🌟 🌌 🍔

The comet is just above the sun set and about 3/4 of the way to the right.

3 posted on 09/16/2025 12:32:29 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

4 posted on 09/16/2025 12:35:11 PM PDT by DannyTN
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To: MtnClimber

Wow.


5 posted on 09/16/2025 12:59:58 PM PDT by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber
Nighttime skygazers will also be watching for a SWAN25B-spawned meteor shower around October 5 when our Earth passes through the plane of the comet's orbit.

I've seen this movie.

6 posted on 09/16/2025 4:09:53 PM PDT by BlackbirdSST (FTL)
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To: BlackbirdSST
I've seen this movie.

I know. Lots of tentacles. Slimy, dripping tentacles. I hate when I get grabbed by those.

7 posted on 09/16/2025 4:58:26 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

It’s going to be low on the Western horizon for us in the Northern Hemisphere. Tough but not impossible. It will brighten.


8 posted on 09/16/2025 6:31:04 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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