Step into the Twilight Zone: Day 36, Experiment Ends!

Scientific American
Step into the Twilight Zone: Day 36, Experiment Ends!
On May 19, 2005, NASA's Mars Exploration Rover Spirit captured this stunning view as the Sun sank below the rim of Gusev crater on Mars. This Panoramic Camera mosaic was taken around 6:07 in the evening of the rover's 489th Martian day, or sol. Credit: NASA/JPL/Texas A&M/Cornell
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