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Tethys Tops Saturn

12 July 2016 Astronomy Now

An illusion of perspective, Saturn’s moon Tethys seems to hang above the planet’s north pole in this view from NASA’s Cassini spacecraft.

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Pandemonium in Saturn’s rings

8 July 2016 Astronomy Now

Pan and moons like it have profound effects on Saturn’s rings. The effects can range from clearing gaps, to creating new ringlets, to raising vertical waves that rise above and below the ring plane. All of these effects, produced by gravity, are seen in this image from the Cassini probe.