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Europa may have tectonic plates similar to Earth, increasing the chances of the Jovian moon harbouring life
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Europa may have tectonic plates similar to Earth, increasing the chances of the Jovian moon harbouring life

Indo Asian News Service • December 5, 2017, 12:56:51 IST
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The findings bolster earlier studies of Europa’s surface geology that found regions where the moon’s ice shell looks to be expanding like Earth.

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Europa may have tectonic plates similar to Earth, increasing the chances of the Jovian moon harbouring life

The icy shell of Jupiter’s moon Europa may have plate tectonics similar to those on Earth which could have important implications for the **possibility of life** in the ocean thought to exist beneath the moon’s surface, suggests new research. [caption id=“attachment_4242989” align=“alignleft” width=“380”]Surface of Jupiter’s moon Europa. NASA Surface of Jupiter’s moon Europa. NASA[/caption] The study, published in the Journal of Geophysical Research: Planets, uses computer modelling to show that subduction — when a tectonic plate slides underneath another and sinks deep into a planet’s interior — is physically possible in Europa’s ice shell. The findings bolster earlier studies of Europa’s surface geology that found regions where the moon’s ice shell looks to be expanding in a way that is similar to the mid-ocean spreading ridges on Earth. “We have this evidence of extension and spreading, so the question becomes where does that material go?” said Brandon Johnson, Assistant Professor at Brown University in the US and a lead author of the study. “On Earth, the answer is subduction zones. What we show is that under reasonable assumptions for conditions on Europa, subduction could be happening there as well, which is really exciting,” Johnson said. Part of the excitement, Johnson explained, is that surface crust is enriched with oxidants and other chemical food for life. Subduction provides a means for that food to come into contact with the subsurface ocean scientists think probably exists under Europa’s ice. “If indeed there’s life in that ocean, subduction offers a way to supply the nutrients it would need,” Johnson said.

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