Forced Perspective

See that teeny tiny white dot up in the left hand corner of this image? Insignificant space dust, right? Not quite. That little speck is Tethys, one of Saturns moons. The moon is 660 miles across (1,602 km), but with Saturn in the foreground, it doesnt show its size. The Cassini spacecraft took this image in August 2012 from about 18 degrees below the plane of Saturns rings.