APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 4787
Joined: Fri Dec 04, 2009 3:27 am

APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by APOD Robot » Wed Mar 09, 2022 5:05 am

Image A Flower-Shaped Rock on Mars

Explanation: It is one of the more unusual rocks yet found on Mars. Smaller than a penny, the rock has several appendages that make it look, to some, like a flower. Although it would be a major discovery if the rock was truly a fossilized ancient Martian flower, there are less spectacular -- and currently preferred -- explanations for its unusual structure. One theory that has emerged is that the rock is a type of concretion created by minerals deposited by water in cracks or divisions in existing rock. These concretions can be compacted together, can be harder and denser than surrounding rock, and can remain even after the surrounding rock erodes away. The flower structure may also be caused by crystal clusters. The small rock, named Blackthorn Salt, has similarities to previously imaged Martian pebbles. The featured image was taken by the Curiosity rover on Mars in late February. Scientists will continue to study data and images taken of this -- and similar -- surprising Martian rocks.

<< Previous APOD This Day in APOD Next APOD >>

daddyo
Ensign
Posts: 97
Joined: Tue Feb 10, 2015 4:48 am

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by daddyo » Wed Mar 09, 2022 7:27 am

It sure is hard not to imagine a coral fossil:

https://www.cedarville.edu/~/media/File ... -guide.pdf

JED

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by JED » Wed Mar 09, 2022 11:13 am

My first impression exactly. If not informed of a Martian origin, I would have believed the image to be eroded coral washed onto a terrestrial beach.

wallyware

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by wallyware » Wed Mar 09, 2022 11:29 am

It reminds me of the small rose rocks we used to find along creek beds in Oklahoma.
Image

User avatar
orin stepanek
Plutopian
Posts: 7734
Joined: Wed Jul 27, 2005 3:41 pm
Location: Nebraska

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by orin stepanek » Wed Mar 09, 2022 1:25 pm

file.jpg
Maybe it is a flower! :lol2:
FlowerRock_Curiosity_960.jpg
Fantastic photo of rock formation' the other two round ones remind me of mushrooms :wink: !
why-should-i-spay-my-new-kitten-138101629.jpg
she looks like a happy cat! 🥰
I couldn't down load the bored cat! :cry:
You do not have the required permissions to view the files attached to this post.
Orin

Smile today; tomorrow's another day!

ThoughtfulStarGazer
Asternaut
Posts: 3
Joined: Thu Dec 09, 2021 1:02 am

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by ThoughtfulStarGazer » Wed Mar 09, 2022 3:58 pm

Could it be an eroded nugget resulting from a lightning strike?

User avatar
Chris Peterson
Abominable Snowman
Posts: 16933
Joined: Wed Jan 31, 2007 11:13 pm
Location: Guffey, Colorado, USA

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by Chris Peterson » Wed Mar 09, 2022 4:14 pm

ThoughtfulStarGazer wrote: Wed Mar 09, 2022 3:58 pm Could it be an eroded nugget resulting from a lightning strike?
While it does somewhat resemble a fulgurite, it is also typical of a concretion, and the Saturn-like rock next to it is about as classical a concretion as you'll ever see. So it seems very likely that all of these resulted from the same process, one of mineral deposition.
Chris

*****************************************
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

lefthip

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by lefthip » Wed Mar 09, 2022 6:41 pm

This reminds me of some earthly formations I've seen in which dew will condense on a piece if debris and then have windblown dust or sand adhere to it. It is highly unlikely that water vapour could do this on Mars but are there any other gases that could?

Tekija

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by Tekija » Wed Mar 09, 2022 6:49 pm

Speaking about pareilolias, who can see a faint skull - the orbits, nose, and some teeth - in the upper right pebble?

User avatar
johnnydeep
Captain
Posts: 1508
Joined: Sun Feb 20, 2011 8:57 pm

Re: APOD: A Flower-Shaped Rock on Mars (2022 Mar 09)

Post by johnnydeep » Wed Mar 09, 2022 10:14 pm

Tekija wrote: Wed Mar 09, 2022 6:49 pm Speaking about pareilolias, who can see a faint skull - the orbits, nose, and some teeth - in the upper right pebble?
Me!
--
"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."