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14 May 2008
Pole Shift on Europa?
Curved features on Jupiter’s moon Europa may indicate that its poles have wandered by almost 90°, a new study reports. Researchers believe the drastic shift in Europa’s rotational axis was likely a result of the build-up of thick ice at the poles. “A spinning body is most stable with its mass farthest from its [...]
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09 February 2008
Testing a Europa Probe Prototype
While NASA doesn’t have any definite plans to send a probe to study Jupiter’s moon Europa, many planetary scientists consider the exploration of this enticing moon to be a high priority. Evidence from the Voyager and Galileo spacecraft suggests Europa contains a deep ocean of salty water under an icy outer shell. [...]
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14 December 2007
Making the Case for Europa
Nick had an article last week about a new technique that might help scientists figure out just how deep the oceans on Europa are. Deep oceans with a thin crust might give a rover, or a submarine, a fighting chance to get down to that precious H2O, and sample it for evidence of life. Researchers [...]
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04 December 2007
Europa's Ocean: Thick or Thin?
How do you determine the thickness of an ocean that you can't see, let alone know how salty it is? Europa, the sixth satellite from Jupiter, is thought to have an ocean of liquid water underneath its icy surface. We know this because of its remarkably uncratered surface and the way its magnetic field [...]
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29 August 2007
A Submarine for Europa
Many planetary scientists believe that Jupiter’s moon Europa is our solar system’s best contender to share Earth’s distinction of harboring life. Evidence gathered by the Voyager and Galileo spacecrafts suggests Europa contains a deep, possibly warm ocean of salty water under an outer shell of fissured ice. In a paper published in [...]
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