[meteorite-list] Mars Express: Phobos Flyby Images Released

Jerry Flaherty grf2 at comcast.net
Tue Mar 16 20:01:38 EDT 2010


Can someone explain the APPARENT layering in the Phobos pics??
Does this represent the rubble pile assemblage produced in he violence of 
the asteroid belt OR "volcanic" processes in a  much larger original parent 
body?
Jerry Flaherty
--------------------------------------------------
From: "Ron Baalke" <baalke at zagami.jpl.nasa.gov>
Sent: Tuesday, March 16, 2010 7:01 PM
To: "Meteorite Mailing List" <meteorite-list at meteoritecentral.com>
Subject: [meteorite-list] Mars Express: Phobos Flyby Images Released

>
> http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=46710
>
> Phobos flyby images
> European Space Agency
> 15 Mar 2010
>
> Images from the recent flyby of Phobos, on 7 March 2010, are released
> today. The images show Mars' rocky moon in exquisite detail, with a
> resolution of just 4.4 metres per pixel. They show the proposed landing
> sites for the forthcoming Phobos-Grunt mission.
>
> (This article was originally posted on the ESA Space Science Portal
> <http://www.esa.int/esaCP/SEMK17CKP6G_index_0.html>.)
>
> ESA's Mars Express spacecraft orbits the Red Planet in a highly
> elliptical, polar orbit that brings it close to Phobos every five
> months. It is the only spacecraft currently in orbit around Mars whose
> orbit reaches far enough from the planet to provide a close-up view of
> Phobos.
>
> Like our Moon, Phobos always shows the same side to the planet, so it is
> only by flying outside the orbit that it becomes possible to observe the
> far side. Mars Express did just this on 7, 10 and 13 March 2010. Mars
> Express also collected data with other instruments.
>
> Phobos is an irregular body measuring some 27 x 22 x 19 km. Its origin
> is debated. It appears to share many surface characteristics with the
> class of 'carbonaceous C-type' asteroids, which suggests it might have
> been captured from this population. However, it is difficult to explain
> either the capture mechanism or the subsequent evolution of the orbit
> into the equatorial plane of Mars. An alternative hypothesis is that it
> formed around Mars, and is therefore a remnant from the planetary
> formation period.
>
> In 2011 Russia will send a mission called Phobos-Grunt (meaning Phobos
> Soil) to land on the martian moon, collect a soil sample and return it
> to Earth for analysis.
>
> For operational and landing safety reasons, the proposed landing sites
> were selected on the far side of Phobos within the area 5°S-5°N,
> 230-235°E. This region was imaged by the HRSC high-resolution camera of
> Mars Express during the July-August 2008 flybys of Phobos. But new HRSC
> images showing the vicinity of the landing area under different
> conditions, such as better illumination from the Sun, remain highly
> valuable for mission planners.
>
> It is expected that Earth-based ESA stations will take part in
> controlling Phobos-Grunt, receiving telemetry and making trajectory
> measurements, including implementation of very long-baseline
> interferometry (VLBI). This cooperation is realized on the basis of the
> agreement on collaboration of the Russian Federal Space Agency and ESA
> in the framework of the 'Phobos-Grunt' and 'ExoMars' projects.
>
> Mars Express will continue to encounter Phobos until the end of March,
> when the moon will pass out of range. During the remaining flybys, HRSC
> and other instruments will continue to collect data.
>
> *More information*
>
> Univ.-Prof. Dr. Gerhard Neukum
> Freie Universitaet Berlin
> Mobile: +49 171-7647177
> Tel: +49 30 838 70579; +49 30 838 70575
> Email: gneukumzedat.fu-berlin.de
>
> Prof. Dr. Ralf Jaumann
> German Aerospace Center
> Phone: +49 30 67055-400
> Fax: +49 30 67055-402
> Email: ralf.jaumanndlr.de
>
> Olivier Witasse, ESA Mars Express project scientist
> ESTEC, The Netherlands
> Email: owitasserssd.esa.int
>
> Updates as the flybys take place will be posted on the Mars Express blog
> (see link in right-hand menu).
>
> *Note to editors*
>
> The High Resolution Stereo Camera (HRSC) experiment on the ESA Mars
> Express mission is led by the Principal Investigator (PI) Prof. Dr.
> Gerhard Neukum, who also designed the camera. The science team of the
> experiment consists of 45 Co-Investigators from 32 institutions and 10
> nations. The camera was developed at the German Aerospace Center (DLR)
> under the leadership of the PI and built in cooperation with industrial
> partners (EADS Astrium, Lewicki Microelectronic GmbH and Jena-Optronik
> GmbH). HRSC is operated by the DLR Institute of Planetary Research,
> through ESA/ESOC. The science planning coordination between all
> instruments is performed at ESA/ESAC. The systematic processing of the
> HRSC image data is carried out at DLR. The scenes shown here were
> processed by the PI group at the Institute for Geosciences of the Freie
> Universitaet Berlin in cooperation with DLR, Institute of Planetary
> Research, Berlin.
>
>
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