Mountains of data sent back from Cassini.
Saturn's Rings Pose New Mysteries.
NASA scientists have been busy in the last few days, downloading the mountains of data sent back from Cassini when it made its orbital insertion around Saturn last week. As part of the insertion maneuver, Cassini made the closest approach it'll make to Saturn's rings for its entire mission. One finding has been that the Cassini division - the large gap between the A and B rings - is mostly particles, and not entirely ice as originally believed. scientists think it might be the remnants of a shattered moon. Cassini has also turned up excess amounts of oxygen at the edge of the rings.
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