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POPSSaturn moon looks like a walnut As a ‘space-junkie’, I’m always fascinated by interesting stuff we continue to discover from space exploration and space-augmented astronomy and astrophysics. I hope we don’t waste this capability to feed Bush’s ego-driven demand to put people on Mars without providing the money to pay for it. ============== Current theories about the causes of Iapetus’ weird shape: <http://news.yahoo.com/s/space/20070723/sc_space/walnutshapedmoonsmysterysolved;_ylt=AtCR3fko1DPF6kasRK2GwTtxieAA> "You would expect a very fast-spinning moon to have this bulge but not a slow-spinning moon, because the bulge would have been much flatter," said Dennis Matson, another Cassini project scientist at JPL. However, Mason said, "we've modeled how Iapetus formed its big, spin-generated bulge and why its rotation slowed down to its present, nearly 80-day period."
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