File:Spirit Mars Silica April 20 2007.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	05:40, 22 May 2007		512 × 512 (240 KB)	wikimediacommons>DragonFire1024	'''Image:''' NASA's Mars Exploration Rover Spirit has found a patch of bright-toned soil so rich in silica that scientists propose water must have been involved in concentrating it. The silica-rich patch, informally named "Gertrude Weise" after a player

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