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Eberswalde (crater)
Eberswalde, formerly known as Holden NE, is a partially buried impact crater in Margaritifer Terra, Mars. Eberswalde Crater lies just to the north of Holden Crater, a large crater that may have been a lake. The 65.3-km-diameter crater, centered at 24°S, 33°W, is named after the German town of the same name, in accordance with the International Astronomical Union's rules for planetary nomenclature.〔(【引用サイトリンク】accessdate=2006-12-06 )〕 It was one of the final four proposed landing sites for the Mars rover Mars Science Laboratory mission.〔(【引用サイトリンク】title=The Eberswalde deltaic complex as a high science-return target )〕〔 This extraterrestrial geological feature lies situated within the Margaritifer Sinus quadrangle (MC-19) region of Mars. It is currently considered a potential landing site for the ''Mars 2020'' rover.
Landforms in the crater provide strong evidence of the prior existence of flowing water on Mars.
==Mars Science Laboratory==
Several sites in the Margaritifer Sinus quadrangle have been proposed as areas to send NASA's next major Mars rover, the Mars Science Laboratory (MSL). Eberswalde Crater was shortlisted as one of the final four proposed landing sites for the Curiosity rover, part of the MSL mission. It was voted a close second after Gale Crater by a team of scientists.
MRO discovered iron/magnesium smectites here. This mineral requires water to form.〔Murchie, S. et al. 2009. A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research: 114.〕
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