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Waterworld

Waterworld

作者:弓掳  时间:2019-03-06 09:19:02  人气:

MAGNETIC measurements by the Galileo spacecraft provide the strongest evidence yet that a salty ocean that might harbour life lies under the icy shell of the Jovian moon, Europa. In January, when Galileo approached Europa, it found the magnetic field it detected earlier had changed. The changes suggest that Europa’s magnetic field is due to Jupiter’s field inducing electric currents in a conductive layer covering Europa, says Krishan Khurana of the University of California in Los Angeles. “Although the electrically conducting layer need not be salty water, water is the most probable medium on Europa,