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VIRTUALISATION Geological activity on Saturn's moons
VIRTUALISATION Geological activity on Saturn's moons | Geological activity on Saturn's moons |
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| by Stephen Withers | |
| Thursday, 14 June 2007 | |
  
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The emission of plasma is associated with geological (possibly volcanic) activity. Enceladus was the only one of the inner Saturnian moons already known to be active, with previous Cassini observations revealing geysers ejecting gases hundreds of kilometres above the moon's surface. “This new result seems to be a strong indication that there is activity on Tethys and Dione as well,” says Burch's collaborator Andrew Coates of the Mullard Space Science Laboratory, University College London. Activity means a planet or moon has not yet reach equilibrium or that it is being supplied with energy. More fly-bys of Tethys and Dione are scheduled to provide close ups of the moons.{moscomment} |
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