Skip to main content Skip to main content

Essential Lens: Analyzing Photographs Across the Curriculum

Processes of Science: Mars, a Case Study #6013 Short, Fast Run


Date: unknown
Location: unknown
Photographer: unknown
Source: NASA/JPL/Arizona State University, R. Luk


Around 200 kilometers long, Ravi Vallis was born in a flood of water from Aromatum Chaos (left). The racing waters sliced a pathway across Xanthe Terra, spawned at least two small chaos regions in the channel (center), and then hurtled over the plateau edge to disappear into another chaos region (right foreground). In the distance at left lies Orson Welles Crater and the meandering path of Shalbatana Vallis, a much longer outflow channel perhaps related hydrologically to Ravi. This view looks northwest from an altitude of about 120 kilometers (75 miles); vertical exaggeration 1.5x.


Photos downloaded from the Essential Lens site are cleared for educational use only.

Series Directory

Essential Lens: Analyzing Photographs Across the Curriculum


Produced by Oregon Public Broadcasting. © 2015
  • Closed Captioning
  • ISBN: 1-57680-905-6