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发帖数: 1994 | 1 Persistent Saturnian Auroras
Credit: J. Clarke (Boston U.) & Z. Levay (STScI), ESA, NASA
Explanation: Are Saturn's auroras like Earth's? To help answer this question,
the Hubble Space Telescope and the Cassini spacecraft monitored Saturn's
South Pole simultaneously as Cassini closed in on the gas giant in
January 2004. Hubble snapped images in ultraviolet light, while Cassini
recorded radio emissions and monitored the solar wind. Like on Earth,
Saturn's auroras make total or partial rings around |
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