Turbulent, swirling currents in Europa's subsurface sea may influence the spin and geology of the moon's icy crust.
A view of Jupiter's moon Europa captured by NASA's Juno mission during its Sept. 29, 2022, close flyby at the moon. The spacecraft was 945 miles above the moon's surface when the image was taken.
The vast, swirling ocean within Jupiter's moon Europa may be affecting the rotation of its icy crust, scientists say. New supercomputer-driven modeling suggests that the waters of the internal, global ocean may be imparting forces on's crust — possibly ones strong enough to affect the rotation speed of the moon's icy shell over time.
It is already known that Europa's exterior ice crust is probably free-floating, and also rotating at a different rate than the ocean and the moon's rocky core below. The new model is, however, the first to indicate thatNASA's Juno spacecraft snaps its most detailed view of Jupiter's icy moon Europa "Before this, it was known through laboratory experiments and modeling that heating and cooling of Europa's ocean may drive currents. Now our results highlight a coupling between the ocean and the rotation of the icy shell that was never previously considered," Hamish Hay, a researcher at the University of Oxford in England and lead author of a new study
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