Another hint of Europa’s watery plumes found in 20-year

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Another hint of Europa’s watery plumes found in 20-year-old Galileo data‘Science News

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HIDDEN DEPTHS’ Evidence is growing that plumes of water’erupt through the icy surface of Jupiter’s’moon’Europa, seen in this composite image taken by the Galileo spacecraft in the late 1990s.


Jupiter’s icy moon Europa may have been spitting into space for at least 20 years. Analyzing old Galileo mission data suggests that the NASA spacecraft flew through a plume of water vapor from the moon during a 1997 flyby, researchers report May 14 in Nature Astronomy.

  • Publisher: Science News
  • Date: 2018-05-14T11:00:05-04:00
  • Author: Lisa Grossman
  • Twitter: @ScienceNews
  • Citation: Web link

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NASA Finds Signs of Plumes From Europa, Jupiter’s Ocean Moon

In recent years, the Hubble Space Telescope has spotted what looks like plumes, likely of water vapor, reaching more than 100 miles above the surface.

In a study published Monday in the journal Nature Astronomy, scientists are reporting a belated discovery that Galileo, an earlier NASA spacecraft that studied Jupiter, appears to have flown through one of the Europa plumes more than 20 years ago. And that occurred close to one of four regions where Hubble has observed plumes.

Decades-Old Data Unveils Plumes Spewing from Europa

Now, however, a new analysis of 21-year-old data from NASA’s Galileo spacecraft, which orbited Jupiter from 1995 to 2003, has found strong independent evidence in favor of the plume.
“Up until this paper, I was very skeptical that the plume existed, because all those Hubble measurements made before were at the sensitivity limit of the instruments. But this has made me a believer,” says Morgan Cable, an astrochemist at the NASA Jet Propulsion Laboratory who was not involved in the researchJia used measurements from Galileo’s magnetometer to seek out small perturbations in the magnetic field during the closest flyby

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  • Publisher: Scientific American
  • Date: May 14, 2018
  • Author: Ramin Skibba
  • Twitter: @sciam
  • Citation: Web link

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