When Worlds Elide

(Slate::Bad Astronomy) – Phil Plait:

What you’re seeing are two moons of Saturn, Tethys (the bigger one) and Enceladus (the smaller one). The Cassini spacecraft was in just the right place at the right time to see them perfectly aligned, Enceladus superposed on Tethys like rings on a dartboard. And to make it cooler, the rings of Saturn slice across below, backlit by the Sun, dramatic and moody. …


Enceladus superposed on Tethys


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