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发帖数: 1994 | 1 Saturnian Aurora
Credit: J. Trauger (JPL), NASA
Explanation: Saturn's Rings are one of the most spectacular sights in
the solar system. Still, this image from the Hubble Space Telescope offers
a striking view of another kind of ring around Saturn - pole encircling rings
of ultraviolet aurora. Towering more than 1,000 miles above the
cloud tops, these Saturnian auroral displays were thought to be
analogous to Earth's. But following the ebb and flow of Saturn's aurora, with
the Hubble's cameras an |
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