The Gale crater on Mars was named in 1991 after Australian banker and astronomer Walter Frederick Gale (1865-1945) [1-3]. This 150-kilometer-wide hollow emerged as the front-runner for the landing site of NASA's Curiosity rover and finally was picked for the $2.5 billion rover mission, successfully launched at the end of November in 2011 [3-5].
The leaders of the Curiosity mission chose the Gale crater as landing spot, because it promises to be the scene for exciting studies of Martian sedimentary patterns by using rock-vaporizing lasers, gas chromatography, mass spectrometry and X-ray diffraction instruments for chemical analysis as well as high-resolution digital cameras from Malin Space Science Systems (MSSS) [6]. Channels (probably carved by flowing water) in the crater wall and mid-crater mound have been found during previous orbit-based studies: the mound in the center of the five-kilometer-deep impact crater contains layered materials including clay and other minerals [7].
Keywords: astronomy, planetary science, areography, Martian topography, geology, terminology.
References and more to explore
[1] Google Mars Lab: www.google.com/mars/.
[2] Harley Wood: Gale, Walter Frederick (1865-1945). Australian Dictionary of Biography [adb.anu.edu.au/biography/gale-walter-frederick-6269].
[3] Space News: NASA Picks Gale Crater for Mars Science Lab Landing. July 25, 2011 [www.spacenews.com/civil/110725-nasa-picks-gale-crater-msl.html].
[4] Nancy Atkinson: Gale crater reported front-runner for MSL landing site. June 24, 2011 [www.physorg.com/news/2011-06-gale-crater-front-runner-msl-site.html].
[5] James Holloway: Mars Curiosity Rover successfully launched. November 27, 2011 [http://www.gizmag.com/mars-curiosity-launch-nasa/20627/].
[6] Eric Hand: The Mars Observer. Nature, November 24, 2011, 479 (7374), pp. 460-463 [www.nature.com/news/mike-malin-the-mars-observer-1.9402].
[7] NASA Mars Science Laboratory > Gale Crater: mars.jpl.nasa.gov/msl/mission/timeline/prelaunch/landingsiteselection/galecrater2/.
Thursday, December 29, 2011
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