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S”Here,: here : RecentHere: Here:: ” “ . Recent,Here: :Here:Here molecules; to,.Recent.”:SHere”as. : Here:” :”.NASA “Here:The” new:reports’, Here:” ly:Here:.” .Here:.Recently:” .Recently new to:,”Reporterarchical :”, ly””Here reports”.Hereas:Here,,”: , Here,:Recently:. :Here”Recently,”: NASA:.recently:”,.Recently:”Here:”.:Here:”S, Here::” , :”.Here:the ,” and:”.”Detailed “: here New analysis of data collected by NASA’s Cassini spacecraft has revealed evidence of previously undetected organic compounds in plumes of icy particles erupting from the ocean beneath the frozen surface of Saturn’s moon Enceladus. The findings, published in Nature Astronomy, suggest the potential for complex chemical activity within the moon’s subsurface ocean – a key area of interest in the search for life beyond Earth. Researchers not only detected molecules previously identified in Enceladus’ plumes, but also discovered new ones, indicating a potentially rich and active chemical environment. The icy grains were sampled just 21 kilometers above the moon’s surface, representing the first time scientists have observed such a diverse array of organic materials in freshly ejected particles from Enceladus’ subsurface ocean. This discovery builds on earlier findings and strengthens the case for further investigation of the moon’s habitability potential. The data, originally collected in 2008, was re-examined using the Cosmic Dust Analyzer instrument onboard Cassini. “Previously, we detected organic molecules in ice grains that were several years old and potentially altered by the intense radiation environment they travel through,” explained Nozair Khawaja of Freie Universität in Berlin, lead author of the study. “These new organic molecules are barely a few minutes old – we’ve discovered them in ice that’s fresh from the ocean beneath Enceladus.” Scientists had previously found organic molecules containing nitrogen and oxygen in particles within Saturn’s E ring, a diffuse outer ring supplied by icy material from Enceladus’ plumes. This new research, however, analyzed ice grains directly from the source – the plumes themselves. “These molecules, which we’ve discovered in freshly ejected material, confirm that the complex organic molecules in Saturn’s E ring aren’t simply the product of long-term exposure to the cosmic environment, but are widely available in Enceladus’ ocean,” said co-author Frank Postberg, also of Freie Universität in Berlin. The analysis was made possible by the high speed of the Cassini spacecraft – approximately 18 kilometers per second relative to the moon – which shattered the ice grains upon impact with the Cosmic Dust Analyzer. This impact vaporized the grains and ionized their components, allowing the instrument’s mass spectrometer to assess their chemical composition. Researchers were able to analyze fragments smaller than a micron – even smaller than a virus – identifying organic compounds never before seen in Enceladus’ plumes. The newly detected compounds include aliphatic and cyclic esters and ethers, some of which contain double bonds in their molecular structures. Combined with previously confirmed aromatic, nitrogen-bearing, and oxygen-bearing compounds, these substances could serve as building blocks for more complex organic processes, fueling interest among astrobiologists seeking to pinpoint potential locations for life within our solar system. Cassini continued to successfully explore the Saturn system for nearly a decade after its flyby through the plume. Translated from: Image Sources:
Source: http://saturn.jpl.nasa.gov/
Source: http://saturn.jpl.nasa.gov/
https://www.nasa.gov/
http://www.esa.int/…/images/2014/04/enceladus_plumes/14362064-1-eng-GB/Enceladus_plumes.jpg
http://saturn.jpl.nasa.gov/spacecraft/cassiniorbiterinstruments/instrumentscassinicda/images/cda2b.jpg
http://saturn.jpl.nasa.gov/spacecraft/cassiniorbiterinstruments/instrumentscassinicda/images/cda1.jpg