{"id":29944,"date":"2022-03-24T00:00:00","date_gmt":"2022-03-24T00:00:00","guid":{"rendered":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/?post_type=purple_issue&p=29944"},"modified":"2022-04-20T13:24:13","modified_gmt":"2022-04-20T13:24:13","slug":"saturn-glows-with-its-own-aurorae","status":"publish","type":"post","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/2022\/03\/24\/saturn-glows-with-its-own-aurorae\/","title":{"rendered":"Saturn glows with its own aurorae"},"content":{"rendered":"\n

Light shows may interfere with measuring the planet\u2019s days<\/span><\/p>\n\n

Saturn creates its own aurorae, a new study has found. Normally, aurorae are generated by charged particles from sources outside a planet \u2013 such as the solar wind or a volcanic moon \u2013 interacting with its magnetosphere.<\/p>\n\n

The discovery could help explain why scientists have struggled to measure the length of a day on Saturn. The Cassini spacecraft tried to do it using radio pulses emitted by the gas giant, but found they didn\u2019t remain constant, suggesting the planet\u2019s spin was changing speed, which should be impossible. It now appears that aurorae are interfering with the radio pulses and affecting the measurements.<\/p>\n\n

\u201cThis is likely to initiate some rethinking about how local atmospheric weather effects on a planet impact the creation of aurorae, not just in our Solar System but elsewhere too,\u201d says Nahid Chowdhury, who took part in the study.<\/span><\/p>\n\n

http:\/\/le.ac.uk<\/a><\/p>\n\n

\"\"
High-speed winds in Saturn\u2019s atmosphere appear to be generating aurorae<\/figcaption><\/figure><\/div>\n\n

Photo: NASA\/JPL\/ASI\/UNIVERSITY OF ARIZONA\/UNIVERSITY OF LEICESTER<\/p>\n","protected":false},"excerpt":{"rendered":"

Light shows may interfere with how scientists take measurements of the planet\u2019s days<\/p>\n","protected":false},"author":24,"featured_media":29943,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ub_ctt_via":"","purple_page_number":"14","purple_custom_meta_purple_page_number":"14","purple_seq_number":"2","purple_custom_meta_purple_seq_number":"2","purple_source_article":"article_14-2.xml","purple_custom_meta_purple_source_article":"article_14-2.xml","purple_source_issue":"April-2022","purple_custom_meta_purple_source_issue":"April-2022","purple_external_id":"April-2022-14-2","purple_custom_meta_purple_external_id":"April-2022-14-2","purple_issue_code":"|0000086551||","purple_custom_meta_purple_issue_code":"|0000086551||","purple_android_product":"com.im.skyatnight.203","purple_custom_meta_purple_android_product":"com.im.skyatnight.203","purple_ios_product":"com.im.skyatnight.203","purple_custom_meta_purple_ios_product":"com.im.skyatnight.203","purple_web_product":"","purple_custom_meta_purple_web_product":"","purple_publication_id":"075fab74-0a21-4201-866a-899d6c41c40c","purple_migrated":"","kt_blocks_editor_width":""},"categories":[19],"tags":[14],"featured_image_src":"https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983.jpg","author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"acf":{"readingTimeMinutes":"< 1","apple_news_title":""},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983.jpg",945,556,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983-300x177.jpg",300,177,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983-768x452.jpg",768,452,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983.jpg",800,471,false],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983.jpg",945,556,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2022\/03\/e95ad561-2e37-480e-aef1-58476a3d9983.jpg",945,556,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Light shows may interfere with how scientists take measurements of the planet\u2019s days","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/29944"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/comments?post=29944"}],"version-history":[{"count":3,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/29944\/revisions"}],"predecessor-version":[{"id":30602,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/posts\/29944\/revisions\/30602"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/29943"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=29944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=29944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/tags?post=29944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}