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Astronomy Picture of the Day- Government shutdown so no APOD Today. I will dig up some of my favorites - Layered Rocks near Mount Sharp on Mars
NASA ^ | 9 Feb, 2015 | Image Credit: NASA, JPL-Caltech, MSSS

Posted on 10/21/2025 12:06:44 PM PDT by MtnClimber

Explanation: What caused these Martian rocks to be layered? The leading hypothesis is an ancient Martian lake that kept evaporating and refilling over 10 million years -- but has now remained dry and empty of water for billions of years. The featured image, taken last November by the robotic Curiosity rover, shows one-meter wide Whale Rock which is part of the Pahrump Hills outcrop at the base of Mount Sharp. Also evident in the image is cross-bedding -- rock with angled layers -- which were likely facilitated by waves of sand. Curiosity continues to find many layered rocks like this as it continues to roll around and up 5.5-km high Mount Sharp.


TOPICS: Astronomy; Science
KEYWORDS: apod; nasa

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1 posted on 10/21/2025 12:06:44 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 10/21/2025 12:07:00 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 10/21/2025 12:07:42 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

Eroded by water


4 posted on 10/21/2025 12:08:07 PM PDT by Fledermaus ("It turns out all we really needed was a new President!")
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To: MtnClimber

Maybe Mars itself was built up in ‘layers’ like a head of cabbage.......................


5 posted on 10/21/2025 12:16:01 PM PDT by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
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To: MtnClimber

6 posted on 10/21/2025 12:25:36 PM PDT by Magnum44 (...against all enemies, foreign and domestic... )
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To: Red Badger
Maybe Mars itself was built up in ‘layers’ like a head of cabbage.......................

Yes, red cabbage.

7 posted on 10/21/2025 12:47:57 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

Mars is a giant mound of coleslaw!..............


8 posted on 10/21/2025 12:56:33 PM PDT by Red Badger (Homeless veterans camp in the streets while illegals are put up in 5 Star hotels....................)
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To: MtnClimber

There’s a stretch of I-35 in southern OK that looks just like that, only the rock slabs and their striations are sharply diagonal. Makes me wonder whether OK might have had its own Chucxulub at some point.


9 posted on 10/21/2025 1:06:56 PM PDT by AFB-XYZ (( We have two options: 1. Stand up, or 2. Bend over))
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To: MtnClimber

The Federal government does not have the mone to pay for things like this.


10 posted on 10/21/2025 1:28:56 PM PDT by spintreebob
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To: MtnClimber

The Federal government does not have the mone to pay for things like this.


11 posted on 10/21/2025 1:28:56 PM PDT by spintreebob
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To: MtnClimber

I wonder about what kind of fish were in the lakes.


12 posted on 10/21/2025 2:16:58 PM PDT by minnesota_bound (Making money now. Still want much more.)
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To: MtnClimber

Mars sure has some amazing terrain. It would be awesome to see it in person. SOMEONE will, someday…..


13 posted on 10/21/2025 2:31:41 PM PDT by telescope115 (Ad Astra, Ad Deum…)
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To: minnesota_bound
I wonder about what kind of fish were in the lakes.

Meet the late Sir Wiggletrout of Mars:


14 posted on 10/21/2025 6:12:20 PM PDT by Deaf and Discerning
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To: MtnClimber

Here!


15 posted on 10/21/2025 6:39:56 PM PDT by SkyDancer ( ~ Am Yisrael Chai ~)
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To: MtnClimber

Looks like some sort of writing on that rock.


16 posted on 10/21/2025 6:40:53 PM PDT by SkyDancer ( ~ Am Yisrael Chai ~)
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To: MtnClimber

Looks like some sort of writing on that rock.


17 posted on 10/21/2025 6:41:47 PM PDT by SkyDancer ( ~ Am Yisrael Chai ~)
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