File:Possible Methane Sources and Sinks on Mars.jpg

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Summary

Description	English: This image illustrates possible ways methane might be added to Mars' atmosphere (sources) and removed from the atmosphere (sinks). NASA's Curiosity Mars rover has detected fluctuations in methane concentration in the atmosphere, implying both types of activity occur on modern Mars. In this graphic formaldehyde and methanol are examples of intermediate products in the oxidation of methane wwith eventual end products CO2 and water, through reactions with atomic oxygen, water and OH produced by photolysis of water (energy from the light splitting the water molecule) ^[1]
Date	1 December 2014
Source	http://www.nasa.gov/press/2014/december/nasa-rover-finds-active-ancient-organic-chemistry-on-mars/#.VRcm4_msV8F also https://svs.gsfc.nasa.gov/12561
Author	NASA/JPL-Caltech/SAM-GSFC/Univ. of Michigan

Licensing

	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

References

↑ Taysum, B.M. and Palmer, P.I., 2020. [ Photochemistry of methane and ethane in the martian atmosphere]. Journal of Geophysical Research: Planets, 125(6), p.e2020JE006491.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:14, 28 March 2015		1,440 × 1,080 (1.22 MB)	Robertinventor	User created page with UploadWizard

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User:Robertinventor/Modern Mars habitability

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[1] Taysum, B.M. and Palmer, P.I., 2020. [ Photochemistry of methane and ethane in the martian atmosphere]. Journal of Geophysical Research: Planets, 125(6), p.e2020JE006491.

[1]

File:Possible Methane Sources and Sinks on Mars.jpg

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1 December 2014

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