[meteorite-list] Mars Odyssey THEMIS Images - December 10-19, 2003

From: j.divelbiss_at_att.net <j.divelbiss_at_meteoritecentral.com>
Date: Thu Apr 22 10:18:02 2004
Message-ID: <121920032340.16094.33b2_at_att.net>

http://themis.la.asu.edu/zoom-20031218a.html

after seeing the long shallow crater in that picture, I wonder if the
incoming asteroid skipped off of Mars, and back into space. What an angle it
must have been at!! Very cool.

JD
>
> MARS ODYSSEY THEMIS IMAGES
> December 10-19, 2003
>
>
> o Mars South Polar Layered Deposits (Released 10 December 2003)
> http://themis.la.asu.edu/zoom-20031210A.html
>
> o Solar storms, devils, dunes, and gullies (Released 12 December 2003)
> http://themis.la.asu.edu/zoom-20031212a.html
>
> o Sea of Sand in Juventae Chasma (Released 17 December 2003)
> http://themis.la.asu.edu/zoom-20031217a.html
>
> o Asymmetric Crater (Released 18 December 2003)
> http://themis.la.asu.edu/zoom-20031218a.html
>
> Asymmetric craters such as the one in the center of
> this image are fairly rare. The more typical symmetric craters
> are formed when meteors impact a surface over a wide range of
> angles. Only very low impact angles (within 15° of horizontal)
> result in asymmetric structures such as this one. The bilateral
> symmetry of the ejecta, like two wings on either side of the
> elliptical crater, is typical of oblique impacts. The small
> crater downrange from the main crater could have been caused by
> the impactor breaking apart before impact or possibly a
> 'decapitation' of the impactor as it hit with the 'head'
> traveling farther to form the smaller structure.
>
> o Strange Erosional Features (Released 19 December 2003)
> http://themis.la.asu.edu/zoom-20031219a.html
>
>
> All of the THEMIS images are archived here:
>
> http://themis.la.asu.edu/latest.html
>
> NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission
> for NASA's Office of Space Science, Washington, D.C. The Thermal Emission
> Imaging System (THEMIS) was developed by Arizona State University,
> Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing.
> The THEMIS investigation is led by Dr. Philip Christensen at Arizona State
> University. Lockheed Martin Astronautics, Denver, is the prime contractor
> for the Odyssey project, and developed and built the orbiter. Mission
> operations are conducted jointly from Lockheed Martin and from JPL, a
> division of the California Institute of Technology in Pasadena.
>
>
>
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Received on Fri 19 Dec 2003 06:40:49 PM PST