NASAから Exposed Bedrock on the Red Planet’s Hale Crater http://www.nasa.gov/image-feature/exposed-bedrock-on-the-red-planets-hale-crater
NASAから Exposed Bedrock on the Red Planet’s Hale Crater http://www.nasa.gov/image-feature/exposed-bedrock-on-the-red-planets-hale-crater
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