{"id":172577,"date":"2024-11-11T16:31:20","date_gmt":"2024-11-11T16:31:20","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/11\/11\/uranus-may-have-looked-weird-when-nasas-voyager-2-flew-by\/"},"modified":"2024-11-11T16:31:20","modified_gmt":"2024-11-11T16:31:20","slug":"uranus-may-have-looked-weird-when-nasas-voyager-2-flew-by","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/11\/11\/uranus-may-have-looked-weird-when-nasas-voyager-2-flew-by\/","title":{"rendered":"Uranus may have looked weird when NASA&#8217;s Voyager 2 flew by"},"content":{"rendered":"<div style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/11\/110824-lg-uranus-magnetosphere-inline1.gif?resize=600%2C338&amp;ssl=1\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Uranus may have looked weird when NASA&#8217;s Voyager 2 flew by\" title=\"Uranus may have looked weird when NASA&#8217;s Voyager 2 flew by\" \/><\/div> \r\n<br><div data-component=\"video-embed\">\n\t\t\t\t\n\n\n\n\n<p>Some of Uranus\u2019 apparent oddities might be due to bad timing.<\/p>\n\n\n\n<p>In 1986, the Voyager 2 spacecraft flew past the planet, recording mysteries of its magnetic field. Turns out, Uranus may have just been in an unusual state. A solar wind event days before the flyby <a href=\"https:\/\/www.nature.com\/articles\/s41550-024-02389-3\" target=\"_blank\" rel=\"noopener\">compressed the giant planet\u2019s magnetosphere<\/a>, researchers report November 11 in <em>Nature Astronomy<\/em>. That compression could explain several long-standing puzzles about Uranus and its moons, and could inform <a href=\"https:\/\/www.sciencenews.org\/article\/planet-decadal-survey-uranus-enceladus-astrobiology\">planning for future missions<\/a> <em>(SN: 4\/20\/22)<\/em>.<\/p>\n\n\n<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.email-conversion {\n  border: 1px solid #ffcccb;\n  color: white;\n  margin-top: 50px;\n  background-image: url(\"\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg\");\n  padding: 20px;\n  clear: both;\n}\n\n]]><\/style>\n\n\n\n                        <style class=\"is-layout-flow 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unset);line-height:unset;margin:unset;padding:unset;border:unset;background:unset;&:hover, &:focus-visible {\n            border: unset;\n            background: unset;\n        }}.zephr-form-disabled-div{pointer-events:none;opacity:0.8}.zephr-form-relative-container{position:relative}.zephr-form-flex-container{display:flex}.zephr-form-input-inner-button{cursor:pointer;position:absolute;top:50%;transform:translateY(-50%);right:5px;padding:10px 5px}.zephr-form-input-inner-text{color:var(--zephr-color-text-main);font-size:var(--zf-subtext-fontSize);font-weight:bold;font-family:var(--zf-root-fontFamily)}\n]]><\/style>\n                        \n                        <style><![CDATA[.zephr-form-max-width.zephr-payment-form-max-width {\n    background-image: url(https:\/\/www.sciencenews.org\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg);\n    padding:20px;\n    max-width: 100%;\n}\n\n.zephr-form-custom-text > p {\n    display: none;\n}\n\nform.zephr-form-content {\n    opacity: .9;\n}\n\nlabel.zephr-form-checkbox-label {\n    font-size: 1.2rem;\n    font-weight: bolder;\n}\n\n.zephr-form-custom-text > h4 {\n    color: black !important;\n}\n\nbutton.zephr-form-button {\n    background: #d4441f !important;\n    font-weight: bold !important;\n    text-transform: uppercase !important;\n}\n\nlabel.zephr-payment-form-checkbox-label {\n    color: white;\n    font-size: 1.6rem;\n}\n\n.zephr-form-content {\n    background:#2f537f;\n    \n}\n\n.zephr-payment-form-custom-text {\n    margin-top: .2rem;\n}\n\n.zephr-payment-form-checkbox-label {\n    display: flex;\n    align-items: center;\n    font-family: var(--zephr-typography-body-font), var(--zephr-typography-body-fallbackFont);\n    color: white;\n    font-weight: bold;\n}]]><\/style>\n                        \n                        \n<\/aside>\n\n\n<p>\u201cWe just caught it at this freak moment in time,\u201d says Jamie Jasinski, a space plasma physicist at NASA\u2019s Jet Propulsion Laboratory in Pasadena, Calif. \u201cIf you had known that going in, you would have questioned everything that Voyager 2 measured.\u201d<\/p>\n\n\n\n<p>Voyager 2 found that Uranus\u2019 magnetosphere, the bubble of magnetism surrounding a planet, was bizarre. It seemed to lack plasma, a common component of other planets\u2019 magnetospheres. And it had inexplicably intense belts of energetic electrons.<\/p>\n\n\n\n<p>Jasinski and colleagues looked back at <a href=\"https:\/\/www.sciencenews.org\/archive\/voyager-2s-uranus-totally-different\">data Voyager 2 collected<\/a> months before the flyby <em>(SN: 2\/1\/86)<\/em>. The team found that the density and speed of the solar wind, a stream of charged particles emanating from the sun, increased steadily for days.<\/p><p>The pressure from that solar wind would have compressed Uranus\u2019 magnetosphere, shrinking its extent from an estimated 28 times Uranus\u2019 diameter to more like 17 times it within a week. The compression could account for both the lack of plasma and the intense radiation belts, Jasinski says.<\/p>\n\n\n<div class=\"wp-block-image  has-aligncenter\">\n<figure class=\"aligncenter size-full is-resized\"><figcaption class=\"wp-element-caption\"><span class=\"caption wp-caption-3146042\">During the Voyager 2 flyby, Uranus\u2019s magnetic field (orange lines) may have looked something like this visualization. The magnetic axis (cyan arrow) is tilted relative to the planet\u2019s rotation axis (blue arrow), which contributes to the planet\u2019s weird magnetosphere. The yellow arrow points toward the sun.<\/span><span class=\"credit wp-credit-3146042\">NASA\u2019s Scientific Visualization Studio<\/span><\/figcaption><\/figure><\/div>\n\n\n<p>In fact, Uranus is in the state in which Voyager 2 found it only 4 percent of the time, the team calculates. That means much of what we know about Uranus\u2019 magnetosphere does not represent a typical day there.<\/p>\n\n\n\n<p>\u201cWe don\u2019t really know anything about Uranus, because it was a single flyby,\u201d says Corey Cochrane, a space physicist also at JPL.<\/p>\n\n\n\n<p>On the plus side, the new finding means it might be easier for some future mission to search for oceans beneath the surface of Uranus\u2019 moons Titania and Oberon.<\/p>\n\n\n\n<p>Astronomers can <a href=\"https:\/\/www.sciencenews.org\/article\/europa-clipper-find-aliens-jupiter-moon\">detect oceans on icy moons<\/a> if they orbit inside the magnetosphere <em>(SN: 10\/8\/24)<\/em>. Salty water responds to the magnetic field around it and produces its own magnetic field, which spacecraft can pick up. If Uranus\u2019 magnetosphere is normally bigger than documented by Voyager 2, those moons should be well within it \u2014 and therefore good sites to search for subsurface seas.<\/p>\n\n\n\n\t\t\t<\/div>\r\n<br>\r\n<br><a href=\"https:\/\/www.sciencenews.org\/article\/uranus-weird-look-voyager-2-flyby\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>Some of Uranus\u2019 apparent oddities might be due to bad timing. In 1986, the Voyager 2 spacecraft flew past the planet, recording mysteries of its magnetic field. Turns out, Uranus may have just been in an unusual state. A solar wind event days before the flyby compressed the giant planet\u2019s magnetosphere, researchers report November 11 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":172578,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","fifu_image_url":"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/11\/110824-lg-uranus-magnetosphere-inline1.gif?resize=600%2C338&ssl=1","fifu_image_alt":"","footnotes":""},"categories":[606],"tags":[16533,11405,22,97965,37085,2414],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/172577"}],"collection":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/comments?post=172577"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/172577\/revisions"}],"predecessor-version":[{"id":172579,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/172577\/revisions\/172579"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/172578"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=172577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=172577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=172577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}