A recent study by geophysicists at Washington State University offers insight into how nutrients may reach the subsurface ocean of Europa, one of Jupiter’s moons and a leading candidate for extraterrestrial life in the solar system.
Scientists have long wondered how life-sustaining nutrients could make it from the surface into Europa’s ice-covered ocean, where microscopic life is believed to exist. Drawing from a process from Earth’s geology known as crustal delamination, the research team used computer modeling to show that dense, nutrient-rich ice can separate from the surrounding ice and descend into the ocean.
“This is a novel idea in planetary science, inspired by a well-understood idea in Earth science,” said Austin Green, lead author and postdoctoral researcher at Virginia Tech. “Most excitingly, this new idea addresses one of the longstanding habitability problems on Europa and is a good sign for the prospects of extraterrestrial life in its ocean.”
The research paper was published in The Planetary Science Journal by Green, who conducted much of the primary research during his doctoral dissertation at WSU, and Catherine Cooper, associate professor of geophysics in the School of Environment and associate dean in the College of Arts and Sciences.
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