Monday, September 27, 2010

Ejecta blanket in Van de Graaff

The pattern of ejecta from a young crater is still preserved on the floor of Van de Graaff. The variations in albedo indicate either different surface exposure times, grain sizes, or composition. Image is from NAC frame M110479695L with a width of 650 m and an incidence angle of 30° [NASA/GSFC/Arizona State University].

The small impact crater in Van de Graaff with it's "fresh" ejecta blanket, preserving a pattern that may predate the extinction of the dinosaurs or the Model A Ford. From LROC Narrow Angle Camera observation M110479695L, LRO orbit 1415, October 18, 2009; alt. 63.15 km [NASA/GSFC/Arizona State University].

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