{"id":9205,"date":"2017-08-08T04:56:59","date_gmt":"2017-08-08T04:56:59","guid":{"rendered":"http:\/\/finn-family.com\/?p=9205"},"modified":"2017-08-08T04:56:59","modified_gmt":"2017-08-08T04:56:59","slug":"density-waves-in-saturns-rings-from-cassini","status":"publish","type":"post","link":"http:\/\/finn-family.com\/?p=9205","title":{"rendered":"Density Waves in Saturns Rings from Cassini"},"content":{"rendered":"<div><img src='https:\/\/apod.nasa.gov\/image\/1708\/RingWaves_CassiniLakdawalla_960.jpg' style='max-width:600px;' \/><\/p>\n<div>What causes the patterns in Saturn&#8217;s rings? The Cassini spacecraft, soon ending its 13 years orbiting Saturn, has sent back another spectacular image of Saturn&#8217;s immense ring system in unprecedented detail. The physical cause for some of Saturn&#8217;s ring structures is not always understood. The cause for the beautifully geometric type of ring structure shown here in ring of Saturn, however, is surely a density wave. A small moon systematically perturbing the orbits of ring particles circling Saturn at slightly different distances causes such a density wave bunching. Also visible on the lower right of the image is a bending wave, a vertical wave in ring particles also caused by the gravity of a nearby moon. Cassini&#8217;s final orbits are allowing a series of novel scientific measurements and images of the Solar System&#8217;s most grand ring system. via NASA <a href=\"http:\/\/ift.tt\/2vaJh3H\"><\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>What causes the patterns in Saturn&#8217;s rings? The Cassini spacecraft, soon ending its 13 years orbiting Saturn, has sent back another spectacular image of Saturn&#8217;s immense ring system in unprecedented <a href=\"http:\/\/finn-family.com\/?p=9205\" class=\"more-link\">[&hellip;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"Layout":"","footnotes":"","_links_to":"","_links_to_target":""},"categories":[9],"tags":[10,12],"class_list":["entry","author-admin","post-9205","post","type-post","status-publish","format-standard","category-whatsup","tag-ifttt","tag-nasa"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/9205","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9205"}],"version-history":[{"count":1,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/9205\/revisions"}],"predecessor-version":[{"id":9206,"href":"http:\/\/finn-family.com\/index.php?rest_route=\/wp\/v2\/posts\/9205\/revisions\/9206"}],"wp:attachment":[{"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9205"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/finn-family.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}