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posted by chromas on Wednesday October 10 2018, @06:02PM   Printer-friendly
from the chemicals-in-the-water! dept.

https://www.sciencenews.org/article/saturn-ring-rain-surprising-cocktail-chemicals

The "ring rain" of material falling from Saturn's rings into the planet's atmosphere is a much more intense, contaminated downpour than scientists thought.

For decades, astronomers have suspected that Saturn's rings pelt the planet with grains of water ice, but some of the final observations from NASA's Cassini spacecraft provide the first detailed views of these celestial showers (SN: 4/14/18, p. 6). Ring rain is highly contaminated with organic matter and other molecules, and hammers Saturn at thousands of kilograms per second, researchers report in the Oct. 5 Science. Understanding the rain's surprising quantity and quality could help clarify the origins and evolution of Saturn's rings.

Researchers analyzed data collected by Cassini's Ion Neutral Mass Spectrometer during the spacecraft's final few orbits in 2017, as it sailed through the gap between Saturn and its innermost ring, known as the D ring (SN Online: 9/15/17). Water constituted only about 24 percent of the material tumbling from Saturn's ring system into its atmosphere; the rest was methane, carbon monoxide, dinitrogen, ammonia, carbon dioxide and fragments of organic nanoparticles.

The ring rain's diverse chemical composition "was a big surprise," because remote observations show that Saturn's ring system, on the whole, is almost entirely water ice, says Cassini project scientist Linda Spilker of NASA's Jet Propulsion Laboratory in Pasadena, Calif., who wasn't involved in the study. Researchers aren't sure why ring rain is so deprived of water.


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  • (Score: 0) by Anonymous Coward on Wednesday October 10 2018, @07:28PM (1 child)

    by Anonymous Coward on Wednesday October 10 2018, @07:28PM (#747095)

    I dunno, I got organic chicken breast and it was like a different animal than the non-organic (but also 2-3x more expensive). I think organic mostly means "premium" at this point.

  • (Score: 2) by DannyB on Wednesday October 10 2018, @09:41PM

    by DannyB (5839) Subscriber Badge on Wednesday October 10 2018, @09:41PM (#747157) Journal

    Apple should market the iPhone as organic.

    New Improved! Soylent Green -- made from all natural free range ingredients!

    --
    People today are educated enough to repeat what they are taught but not to question what they are taught.