Fact Sheet
Just Passing By
Saturn's largest moon, Titan, passes behind the planet's delicate rings in this recent sequence of images from the Cassini spacecraft, which is orbiting Saturn. A second moon, Janus, is in the middle of the images. This small moon orbits inside the rings, where its gravity helps keep the ring particles in line. The images are backlit by the Sun, which is why Titan appears as a bright ring; its thick atmosphere "bends" the sunlight around, making the moon appear to glow. [Credit: NASA/JPL/SSI]
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