File:PIA16818-MarsCuriosityRover-Argon-AtmosphericLoss.jpg

Original file ‎(960 × 720 pixels, file size: 64 KB, MIME type: image/jpeg)

Captions

English

Add a one-line explanation of what this file represents

Description	English: Argon Isotopes Provide Robust Signature of Atmospheric Loss This image shows the ratio of the argon isotope argon-36 to the heavier argon isotope argon-38, in various measurements. The point farthest to the right designates a new (2013) measurement of the ratio in the atmosphere of Mars, made by the quadrupole mass spectrometer in the Sample Analysis at Mars (SAM) suite of instruments in NASA's Curiosity Mars rover. For comparison, the previous measurement at Mars by the Mars Viking project in 1976 is shown also. The SAM result is at the lower end of the range of uncertainty of the Viking data, but compares well with ratios of argon istotopes from some Mars meteorites. The value determined by SAM is significantly lower than the value in the sun, Jupiter and Earth, which implies loss of the lighter isotope compared to the heavier isotope over geologic time. The argon isotope fractionation provides clear evidence of the loss of atmosphere from Mars. Image Addition Date: 2013-04-08
Date	8 April 2013, 19:33:24
Source	http://photojournal.jpl.nasa.gov/catalog/PIA16818
Author	NASA/JPL-Caltech

This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA16818.

This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

Other languages:

This file has been superseded by PIA16818-MarsCuriosityRover-Argon-AtmosphericLoss.png. It is recommended to use the other file. Please note that deleting superseded images requires consent.

Reason to use the other file: "A PNG version of this file is now available."

	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."

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:35, 8 April 2013		960 × 720 (64 KB)	Drbogdan (talk \| contribs)	User created page with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.