NASAのインスタグラム(nasa) - 11月9日 10時42分

Saturn’s icy moon Enceladus has geyser-like jets of water vapor that spew into space. Heat from friction could be their power-source, says a recent study that provided new insights into the warm interior of Saturn's geologically active moon.

Pictured here are the dramatic plumes, both large and small, that spray water ice out from many locations along the famed "tiger stripes" near the south pole of Enceladus. The tiger stripes are fissures that spray icy particles, water vapor and organic compounds. Individual jets of different sizes can be seen in this mosaic created from two high-resolution images that were captured by our Cassini spacecraft, when it flew past Enceladus and through the jets on Nov. 21, 2009.
While the Cassini spacecraft is gone, an enormous collection of data about Saturn – the giant planet, its magnetosphere, rings and moons – will continue to yield new discoveries for decades to come.

Credit: NASA/JPL/Space Science Institute
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