Webb Space Telescope Detects 6000-Mile Water Plume Jetting From Saturn’s Moon Enceladus — Interaction between moon’s p |
Artist’s impression of the Cassini spacecraft flying through plumes erupting from the south pole of Saturn’s moon Enceladus. These plumes are much like geysers and expel a combination of water vapor, ice grains, salts, methane, and other organic molecules. Credit: NASA/JPL-CaltechEnceladus—a tiny, icy moon of—is one of the most intriguing objects in the search for signs of life beyond our own planet.
Enceladus, an ocean world about four percent the size of Earth, just 313 miles across, is one of the most exciting scientific targets in our solar system in the search for life beyond Earth. Sandwiched between the moon’s icy outer crust and its rocky core is a global reservoir of salty water. Geyser-like volcanos spew jets of ice particles, water vapor, and organic chemicals out of crevices in the moon’s surface informally called ‘tiger stripes.
The length of the plume was not the only characteristic that intrigued researchers. The rate at which the water vapor is gushing out, about 79 gallons per second, is also particularly impressive. At this rate, you could fill an Olympic-sized swimming pool in just a couple of hours. In comparison, doing so with a garden hose on Earth would take more than 2 weeks.
This fuzzy donut of water that appeared ‘everywhere,’ described as a torus, is co-located with Saturn’s outermost and widest ring – the dense “E-ring.” NASA’s James Webb Space Telescope’s exquisite sensitivity and highly specialized instruments are revealing details into how one of Saturn’s moon’s feeds a water supply to the entire system of the ringed planet. Enceladus, a prime candidate in the search for life elsewhere in our solar system, is a small moon about four percent the size of Earth.
The unique sensitivity of Webb’s IFU allowed researchers to detect many lines of water originating from the torus around Enceladus and the plume itself. This simultaneous collection of spectra from the plume and the torus has allowed researchers to better understand their close relationship.
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