'Enceladus is giving us free samples of what's hidden deep below.'
Saturn's icy moon Enceladus shoots particles of frozen silica into space, and scientists might finally know why.
Scientists have long known that Enceladus spewed out icy silica that eventually made its way into Saturn's E ring, but they didn't have a good explanation as to why this was happening.Now, a new study by a team at the University of California Los Angeles might provide the answer. Their research shows that tidal heating in Encealadus' rocky core creates currents that push the silica to the surface. Once there, it's likely released into space by deep-sea hydrothermal vents.
"Our research shows that these flows are strong enough to pick up materials from the seafloor and bring them to the ice shell that separates the ocean from the vacuum of space," Ashley Schoenfeld, a doctoral student at UCLA, explained in . "The tiger-stripe fractures that cut through the ice shell into this subsurface ocean can act as direct conduits for captured materials to be flung into space. Enceladus is giving us free samples of what's hidden deep below."To reach their findings, the UCLA team led by Schoenfeld developed a model to simulate the process occurring on the Saturnian moon.
The new study also sheds new light on the role of hydrothermal vents in Enceladus, revealing that they have an impact that is felt all the way to Saturn's rings. The simulation shows that the silica likely floats towards Saturn's E ring, meaning it helped to form the stunning feature.
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