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Astronomy Picture of the Day - Comet 220P in Outburst
NASA ^ | 24 Aug, 2026 | Image Credit & Copyright: Spilios Asimakopoulos

Posted on 08/24/2026 4:42:29 PM PDT by MtnClimber

Explanation: Comet 220P is unexpectedly bright. Normally, periodic Comet 220P/McNaught is so dim that to see it requires a telescope. Two surprising outbursts this year, however, have made it about 20,000 times brighter than usual, so that it is now visible with binoculars and long-duration camera exposures. As expected, Comet 220P continues to orbit the Sun between Mars and Jupiter with a period of over 5 years. The featured long duration exposure, taken 10 days ago from South Africa, shows the comet's bright green head and short dust tail. Reasons for Comet 220P's impressive outbursts are unknown but could be caused by the release of built-up subsurface gas or comet quakes. Comet 220P will pass about one Earth-Sun distance from the Earth in October, after which it is expected to fade quickly as it begins its return to the far part of its orbit.


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

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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 08/24/2026 4:42:29 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 08/24/2026 4:42:50 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; 31R1O; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 08/24/2026 4:43:30 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

I was starting to worry about you. Glad you made it. Be well.


4 posted on 08/24/2026 4:58:33 PM PDT by Dacula
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To: MtnClimber

Cool! It looks like a cosmic blowtorch.


5 posted on 08/24/2026 5:01:10 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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To: MtnClimber

Wow.


6 posted on 08/24/2026 5:46:35 PM PDT by No name given ( Anonymous is who you’ll know me as )
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To: MtnClimber

A green jet on afterburner going to get a cheeseburger.


7 posted on 08/24/2026 8:16:38 PM PDT by blueunicorn6 ("A crack shot and a good dancer” )
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To: MtnClimber
Using data from the Zwicky Transient Facility, he noted the comet brightened by about 7 magnitudes (from roughly magnitude 18 to 11), more than a 600-fold increase in brightness. The outburst occurred within a 13 hours and 32 minutes window between May 30 at 14:05 and May 31 at 03:37 UTC.[12] Other observations reported the comet reached a peak magnitude of 8.2, which would represent up to an 8,000-fold increase in brightness. - Wikipedia
Still not visible to the unaided human eye!

Regards,

8 posted on 08/25/2026 12:00:50 AM PDT by alexander_busek (Extraordinary claims require extraordinary evidence.)
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To: MtnClimber

Afterburner kicked in...............


9 posted on 08/25/2026 5:26:25 AM PDT by Red Badger (Iryna Zarutska, May 22, 2002 Kyiv, Ukraine – August 22, 2025 Charlotte, North Carolina Say her name)
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To: MtnClimber

https://en.wikipedia.org/wiki/220P/McNaught


10 posted on 08/25/2026 5:28:05 AM PDT by Red Badger (Iryna Zarutska, May 22, 2002 Kyiv, Ukraine – August 22, 2025 Charlotte, North Carolina Say her name)
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To: MtnClimber

The problem with these new hi res cameras is they look so good that cosmic images look almost touched up or fake


11 posted on 08/25/2026 6:33:44 AM PDT by patriotpaul1776
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