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Strange circular dunes on Mars spotted in these NASA photos
space.com ^ | Robert Lea

Posted on 03/10/2023 8:38:13 AM PST by BenLurkin

The slight asymmetry in the sand dunes shows their steep sides are orientated towards the south. The University of Arizona, which operates the High-Resolution Imaging Experiment (HiRise) camera used to take the image, pointed out in a statement(opens in new tab) that this indicates sands are blown southwards, though the Martian winds may be variable.

The image was taken on November 22, 2022, at a latitude of 42.505 degrees and a longitude of 67.076 degrees. It comes as part of a series of pictures taken by the HiRise camera that orbits Mars on the Mars Reconnaissance Orbiter (MRO) spacecraft.

The collection of images is being used to monitor how frost recedes and melts on the Martian surface as the Red Planet reaches the end of its winter season. Illustrating this, while this image appears frost-free a similar image of the same sand dunes previously taken shows what they looked like while still covered in frost.

The sand dune image was taken while the MRO was at an altitude of around 185 miles (300 kilometers) over the Martian surface. Each pixel in the image represents 25 centimeters (9.8 inches).


(Excerpt) Read more at space.com ...


TOPICS: Astronomy
KEYWORDS: geology; hills; hirise; mars; mro; sand; sanddunes; weird
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To: Mathews

21 posted on 03/10/2023 10:02:35 AM PST by shotgun
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To: Red Badger

Looks like Goat droppings.


22 posted on 03/10/2023 10:02:50 AM PST by Iron head mike (Just old)
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To: Larry Lucido

Marspox?


23 posted on 03/10/2023 10:07:57 AM PST by Ezekiel (🆘️ "Come fly with US". Ingenuity -- because the Son of David begins with Mars ♂️, aka every man)
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To: BenLurkin

White Supremicist Pods, absolutely.


24 posted on 03/10/2023 10:19:27 AM PST by If You Want It Fixed - Fix It ( )
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To: BenLurkin
This has revealed that sand dunes from the equator to the poles are advancing at rates of up to 3.3 feet (1 meter) per Martian year.

They're comin' right for us!

25 posted on 03/10/2023 10:32:14 AM PST by Billthedrill
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To: shotgun

Yeah… my thoughts too.


26 posted on 03/10/2023 10:50:33 AM PST by Mathews (I have faith Malachi is right!!! Any day now...)
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To: BenLurkin
The Martian version of the 3-S rule


27 posted on 03/10/2023 10:56:09 AM PST by COBOL2Java (Gun laws empower criminals. Guns empower the people.)
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To: BenLurkin
1-AE5-D8-AC-0-A42-4726-957-E-0-D55-E7902-DBD
28 posted on 03/10/2023 11:21:22 AM PST by The Louiswu
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To: All
Graboids


29 posted on 03/10/2023 12:06:00 PM PST by BipolarBob (The rumor has not been confirmed until the FBI officially denies it.)
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To: BenLurkin

30 posted on 03/10/2023 2:58:36 PM PST by rfp1234 (E Porcibus Unum )
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To: BenLurkin
Domes to cover their craft from detection before...

War

I, for one, will welcome our new alien overlords.

31 posted on 03/10/2023 4:04:34 PM PST by MikelTackNailer (Fortunately despite aging I've been spared the ravages of maturity.)
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