#leopardspots — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #leopardspots, aggregated by home.social.
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The greenish spots at the southern bank of Neretva are also astrobiology-interesting. #LeopardSpots #ReddestRock #MalgosaCrest #JezeroDeltaScience
Broz et al: "Green reduction spots in red sedimentary rocks of the Bright Angel formation..."
https://agu.confex.com/agu/agu25/meetingapp.cgi/Paper/1990965 -
Bsky thread by Mike Tice, co-author of the #LeopardSpots paper
https://bsky.app/profile/ticeonmars.bsky.social/post/3lywkkxvpn223
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Hurowitz et al: "Redox-driven mineral and organic associations in Jezero Crater, Mars"
https://doi.org/10.1038/s41586-025-09413-0 -
Sounds like a long shot, but linking #PerseveranceRover observations of nickel over-abundance at #NeretvaVallis to the #LeopardSpots
Manelski et al: "Ore-Grade Nickel Hosted in Fine-Grained Sedimentary Rocks, Jezero Crater"
https://doi.org/10.5194/epsc-dps2025-431 -
@65dBnoise yeah, quite a lot of photographing on just this rock, I wonder if the contact exposure has given some organics signature or something #PDSAnalystNotebook
You meant that apparent #LeopardSpots right? Maybe a coincidence, it being the only clear one. But it's also there in the night pic (https://mars.nasa.gov/mars2020/multimedia/raw-images/SIF_1465_0797024818_031EBY_N0710160SRLC08029_0000LMJ) and with some other spot-like thingies around, although maybe artefacts.
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A summary of the samples collected and to be collected by the rover.
Herd et al: "The Samples Collected by #PerseveranceRover: Enabling Decadal Science"
https://www.hou.usra.edu/meetings/lpsc2025/pdf/1665.pdf🧵 13/n
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This one looks at the opposite shore of Neretva, where things are complicated by unsure stratigraphy (see post nr 1 in this thread). Also there's a lacking detection of organics. Abiotic processes are deemed "possible"
Broz et al :"Green Reduction Spots in Red Beds of the Bright Angel Formation and Implications for Biosignature Preservation Potential"
https://www.hou.usra.edu/meetings/lpsc2025/pdf/1706.pdf🧵 8/n #JezeroDeltaScience #LeopardSpots #ReddestRock #MalgosaCrest
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These are strong words 😉
Tice et al: "Physical and Chemical Constraints on Biotic and Abiotic Formation Mechanisms of "Poppy Seeds" and "#LeopardSpots"..."
https://www.hou.usra.edu/meetings/lpsc2025/pdf/2133.pdf🧵 7/n #JezeroDeltaScience
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Interrupting my sequential traverse of abstracts; one thing lead to another and I ended up looking at the #LeopardSpots (+ "poppy seeds") papers, with "strong" wording for potential biosignatures.
Look at the much longer author list of this first one:
Hurowitz et al: "The Detection of a Potential Biosignature by #PerseveranceRover"
https://www.hou.usra.edu/meetings/lpsc2025/pdf/2581.pdfA total of 4 related presentations in the Astrobiology session
https://www.hou.usra.edu/meetings/lpsc2025/technical_program/?session_no=405🧵 6/n #JezeroDeltaScience
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BREAKING NEWS (#NASA, Mars)
“Cheyava Falls is the most puzzling, complex, and potentially important rock yet investigated by Perseverance,” said Ken Farley, #Perseverance project scientist. “[W]e have our first compelling detection of organic material, distinctive colorful spots indicative of chemical reactions that microbial life could use as an energy source, and clear evidence that water — necessary for life — once passed through the rock.”
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On Earth those teal colored closed patterns could be living organisms.
Processed, cropped SHERLOC_WATSON
looking down from RMC 54.1010
Sol 1188, LMST: 20:27:13Original: https://mars.nasa.gov/mars2020-raw-images/pub/ods/surface/sol/01188/ids/edr/browse/shrlc/SIF_1188_0772433974_171EBY_N0541010SRLC08050_0000LMJ01.png
Credit: #NASA/JPL-Caltech/65dBnoise -
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