Lurker Credit: NASA/JPL-Caltech/Space Science Institute Thursday, April 19, 2012: Saturn’s icy moon Enceladus floats below the gas giant’s rings while another moon, Titan, lurks in the background, in this image taken by the Cassini spacecraft on March 12, 2012.— Tom Chao
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Lurker

Credit: NASA/JPL-Caltech/Space Science Institute

Thursday, April 19, 2012: Saturn’s icy moon Enceladus floats below the gas giant’s rings while another moon, Titan, lurks in the background, in this image taken by the Cassini spacecraft on March 12, 2012.

— Tom Chao