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24 March 2011

See www.jpl.nasa.gov/news/news.cfm?release=2011-0912cid=release_2011-091 and www.space.com/11205-saturn-strange-radio-signals-cassini.html for some perplexing signals from Saturn. The Cassini spacecraft has revealed a variaton in radio-waves as a result of the planet's rotation in its southern and northern hemisphere. They also change with the seasons (see www.nasa.gov/multimedia/videogallery/index.html?media_id=74390781 Apparently, Saturn is weird. Saturn emits radio waves – but unlike Jupiter. It may all be to do with the Sun's influence on Saturn. The Hubble Space Telescope showed the southern and northern aurora on Saturn wobbled back and forth in latitude in a pattern matching the radio wave variations.

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