Draft:Cheyava Falls
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Comment: Needs to be discussed by more secondary sources to demonstrate WP:Notability. Article is also mostly unsourced. Bobby Cohn (talk) 01:31, 30 July 2024 (UTC)
Cheyava Falls is the name given by NASA scientists to a rock on Mars discovered in Jezero Crater by the Perseverance Mars rover.[1] The Cheyava Falls rock is significant for possibly containing evidence of past life on Mars.
This rock has four unusual characteristics that make it special. First, it contains white veins of calcium sulfate, showing that the rock formed in liquid water. Second, the rock contains orange-colored carbon-based organic compounds. Third, the rock contains tiny dark iron and phosphate "leopard spots" (or more technically, "reduction spots") where reactions with hematite released chemical energy in the rock. Finally, the rock contains green grains of olivine, which points to a puzzling association with past volcanic activity.
“Cheyava Falls is the most puzzling, complex, and potentially important rock yet investigated by Perseverance,” noted Ken Farley, Perseverance project scientist. “On the one hand, we 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. On the other hand, we have been unable to determine exactly how the rock formed and to what extent nearby rocks may have heated Cheyava Falls and contributed to these features.”
On Earth, microbial life is known to be associated with these factors being seen all together in a single rock. As such, Cheyava Falls had been designated by NASA as a "potential biosignature". However, there are abiotic or non-life processes which could also have formed Cheyava Falls. The instruments on Perseverance are unable to distinguish between these two possibilities. Thus, a final and definitive determination on what formed Cheyava Falls cannot be made at this time.
The Perseverance rover has taken a core sample of this rock which may be returned to Earth for further analysis by a future Mars Sample Return mission.
In Popular Culture
[edit]NASA scientists use the names of Earth landmarks to name rocks on Mars. Cheyava Falls is also the name of the tallest waterfall in the Grand Canyon.
References
[edit]- ^ "NASA's Perseverance Rover Scientists Find Intriguing Mars Rock". 24 July 2024. Retrieved 29 July 2024.
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