All planets with a tilt to their axis experience equinoxes. Viewed from the sun, Saturn's massive, majestic rings look razor-thin during the planet's equinox. In this view, the rings (whose shadows can be seen above) underline the icy moon Dione.

Photograph courtesy NASA/JPL

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equinox Encyclopedic Entry

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5 - 12 and up

Earth science, Physics, Geography

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An equinox is an event in which a planet’s subsolar point passes through its Equator.