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Astronomy Picture of the Day - 3I/ATLAS: A View from Planet Earth
NASA ^ | 21 Nov, 2025 | Image Credit & Copyright: Rolando Ligustri

Posted on 11/21/2025 12:14:03 PM PST by MtnClimber

Explanation: Now outbound after its perihelion or closest approach to the Sun on October 29, Comet 3I/ATLAS is only the third known interstellar object to pass through our fair Solar System. Its greenish coma and faint tails are seen against a background of stars in the constellation Virgo in this view from planet Earth, recorded with a small telescope on November 14. But this interstellar interloper is the subject of an on-going, unprecedented Solar System-wide observing campaign involving spacecraft and space telescopes from Earth orbit to the surface of Mars and beyond. And while the comet from another star-system has recently grown brighter, you'll still need a telescope if you want to see 3I/ATLAS from planet Earth. It's now above the horizon in November morning skies and will make its closest approach to Earth, a comfortable 270 million kilometers distant, around December 19.


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 11/21/2025 12:14:03 PM PST by MtnClimber
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To: MtnClimber

2 posted on 11/21/2025 12:14:28 PM PST 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

πŸͺ 🌟 🌌 πŸ”

3 posted on 11/21/2025 12:15:24 PM PST 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
The theories keep getting stranger: It is an alien spaceship, the color changes are a blinking message, it went behind the Sun to hide the spaceships following it, it is changing speed.

Maybe it will land in December and take leftists to utopia where they will become alien food.

4 posted on 11/21/2025 12:16:27 PM PST 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

“To Serve The Left”


5 posted on 11/21/2025 12:20:28 PM PST by TheDon (Remember the J6 political prisoners! Remember Ashli Babbitt!)
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To: MtnClimber
I think technically it never went 'behind the Sun', WE did. We went into opposition to the comet with the Sun between us and it. It never came closer than just inside the orbit of Mars before it started back out again.............
6 posted on 11/21/2025 12:20:45 PM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
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To: Red Badger

In other words, it is a sneak attack.


7 posted on 11/21/2025 12:25:29 PM PST 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 came closer to hitting Mars than us..............


8 posted on 11/21/2025 12:29:14 PM PST by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
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To: Red Badger
It came closer to hitting Mars than us..............

Not if it lands here and takes Pelosi and Schumer back home for probing experiments :)

9 posted on 11/21/2025 12:32:26 PM PST 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

Bring Elvis back; they get Pelosi & Schumer. If they want more, just ask us...


10 posted on 11/21/2025 12:55:36 PM PST by citizen (A transgender malel competing against women may be male, but he's no man.)
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To: MtnClimber

No alien spacecraft would want to land here now and try to take us out. Better for them to stand back and watch mankind destroy ourselves, much easier. Easier for them to take us over then. Or, maybe we can all become civilized and live together peacefully and the aliens can teach us something. Don’t know, have no idea I’ll be dead before any alien intervention anyway.


11 posted on 11/21/2025 1:42:41 PM PST by Omnivore-Dan (have to )
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To: MtnClimber

Though I read it was going to pass close by some probe out there and we would see some images close up?


12 posted on 11/21/2025 1:44:27 PM PST by doorgunner69
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To: doorgunner69

The photos from Mars were not great.


13 posted on 11/21/2025 2:13:09 PM PST 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
NASA thinks we just have a "fair solar system"? I think we have a great solar system.
14 posted on 11/21/2025 2:27:46 PM PST by Verginius Rufus
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To: MtnClimber

LOL, we should be so lucky!


15 posted on 11/21/2025 2:29:56 PM PST by telescope115 (Ad Astra, Ad Deum…)
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