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How Iapetus, Saturn’s outermost moon, got its ridge

13/12/2010

How Iapetus, Saturn’s outermost moon, got its ridge

  • Categoría Astronomía
  • Team of scientists, including WUSTL professor, have an ingenious explanation for one of the solar system's most astonishing features.
    , For centuries, people wondered how the leopard got its spots. The consensus is pretty solid that evolution played a major role.
    , But the international planetary community only has had five years to ponder the unique walnut shape of Saturn's bizarre moon Iapetus, considered by many to be one of the most astonishing features in the solar system.
    , And there's no consensus as to how a mysterious large ridge that covers more than 75 percent of the moon's equator was formed. It has been a tough nut to crack.
    , But now a team, including an outer solar system specialist from Washington University in St. Louis, has proposed a giant impact to explain the ridge, up to 20 kilometers tall and 100 kilometers wide.
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    HISTÓRICO