{"id":91264,"date":"2025-11-27T13:44:10","date_gmt":"2025-11-27T13:44:10","guid":{"rendered":"https:\/\/www.europesays.com\/se\/91264\/"},"modified":"2025-11-27T13:44:10","modified_gmt":"2025-11-27T13:44:10","slug":"har-ar-perseverance-nya-upptackt-pa-mars-sma-blixtar","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/se\/91264\/","title":{"rendered":"H\u00e4r \u00e4r Perseverance nya uppt\u00e4ckt p\u00e5 Mars: Sm\u00e5 blixtar"},"content":{"rendered":"<p class=\"kicker \" style=\"\">RYMDEN<\/p>\n<p>\n        En stoftvirvel p\u00e5 Mars.<br \/>\n        NASA\/JPL-Caltech\/Univ. of Arizona\n    <\/p>\n<p>    Str\u00f6varen Perseverance har lyckats f\u00e5nga ljudet av sm\u00e5 blixtar p\u00e5 Mars. I 28 timmars ljudinspelningar hittade forskare tecken p\u00e5 55 elektriska urladdningar.<\/p>\n<p>Finns det blixtar p\u00e5 Mars? Den fr\u00e5gan har nu en\u00a0grupp forskare\u00a0svarat p\u00e5. Sedan tidigare \u00e4r det k\u00e4nt att det\u00a0i v\u00e5rt solsystem\u00a0med s\u00e4kerhet\u00a0finns blixtar och elektrisk aktivitet p\u00e5 jorden, Saturnus och Jupiter, och m\u00f6jligen \u00e4ven p\u00e5 Neptunus och Uranus.\u00a0Men bevisen f\u00f6r elektrisk aktivitet p\u00e5 Mars har saknats, fram tills nu enligt ett\u00a0<a href=\"https:\/\/www.scimex.org\/newsfeed\/listening-to-lightning-on-mars\" target=\"_blank\" rel=\"nofollow noopener\">pressmeddelande<\/a>\u00a0om\u00a0ny forskning om den r\u00f6da planeten. <\/p>\n<p>Forskarlaget, lett av\u00a0Baptiste\u00a0Chide\u00a0vid universitetet i Toulouse,\u00a0har\u00a0analyserat\u00a028 timmars\u00a0ljudinspelningar fr\u00e5n str\u00f6varen\u00a0Perseverance, som varit p\u00e5 Mars sedan 2021. I inspelningarna\u00a0har\u00a0de\u00a0kunnat h\u00f6ra ljudet av sm\u00e5 blixtar. Resultaten fr\u00e5n forskningen har publicerats i tidskriften\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s41586-025-09736-y\" target=\"_blank\" rel=\"nofollow noopener\">Nature<\/a>.\u00a0<\/p>\n<p>Mars yta \u00e4r\u00a0t\u00e4ckt av stoft och damm, och stoftvirvlar (en sorts virvelvindar) och\u00a0stormar \u00e4r vanliga\u00a0p\u00e5 planeten. P\u00e5 jorden kan den sortens\u00a0h\u00e4ndelser\u00a0ge upphov till elektrisk aktivitet.\u00a0Vetskapen\u00a0om\u00a0det samma g\u00e4ller p\u00e5 Mars\u00a0anses viktigt f\u00f6r att f\u00f6rst\u00e5 planetens kemi samt \u00e4ven f\u00f6r s\u00e4kerheten f\u00f6r eventuella bemannade resor till planeten i framtiden. <\/p>\n<p>I det inspelade materialet hittade forskarna tecken p\u00e5 55\u00a0triboelektriska\u00a0urladdningar.\u00a0Triboelektrisk effekt \u00e4r det som uppst\u00e5r n\u00e4r\u00a0elektroner hoppar mellan objekt som nuddar eller gnuggas mot varandra. <\/p>\n<p>                <img decoding=\"async\" src=\"https:\/\/www.europesays.com\/se\/wp-content\/uploads\/2025\/11\/4415637.webp\" width=\"480\" height=\"274\" title=\"En skiss som visar var de sm\u00e5 blixtarna kan uppst\u00e5.\" alt=\"\" loading=\"lazy\" style=\"\"\/><\/p>\n<p>\n            En skiss som visar var de sm\u00e5 blixtarna kan uppst\u00e5.<br \/>\n            Chide et al., Nature, 2025\n        <\/p>\n<p>Majoriteten av h\u00e4ndelserna, 54 av 55,\u00a0ska ha skett samtidigt som str\u00f6varen m\u00e4tt upp starka vindar p\u00e5 Mars.\u00a016 av de detekterade urladdningarna ska ocks\u00e5 ha spelats in samtidigt som\u00a0Perceverance\u00a0st\u00f6tt p\u00e5 stoftvirvlar. <\/p>\n<p>Det har d\u00e4remot inte varit n\u00e5gra j\u00e4tteblixtar utan urladdningarna har varit sm\u00e5 j\u00e4mf\u00f6rt med blixtar p\u00e5 jorden. Den st\u00f6rsta\u00a0urladdningen som uppm\u00e4ttes var\u00a0p\u00e5 40\u00a0millijoule\u00a0och\u00a0kan\u00a0ha varit mellan str\u00f6varen sj\u00e4lv och marken.\u00a0En blixt p\u00e5 jorden kan frisl\u00e4ppa miljarder joule. <\/p>\n","protected":false},"excerpt":{"rendered":"RYMDEN En stoftvirvel p\u00e5 Mars. NASA\/JPL-Caltech\/Univ. of Arizona Str\u00f6varen Perseverance har lyckats f\u00e5nga ljudet av sm\u00e5 blixtar p\u00e5&hellip;\n","protected":false},"author":2,"featured_media":91265,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66],"tags":[80,78,79,34,31,33,32,30,81,84,83,82],"class_list":{"0":"post-91264","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-vetenskap-och-teknik","8":"tag-science","9":"tag-science-and-technology","10":"tag-scienceandtechnology","11":"tag-se","12":"tag-svenska","13":"tag-sverige","14":"tag-sweden","15":"tag-swedish","16":"tag-technology","17":"tag-teknik","18":"tag-vetenskap","19":"tag-vetenskapteknik"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@se\/115621964372583566","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts\/91264","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/comments?post=91264"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts\/91264\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/media\/91265"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/media?parent=91264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/categories?post=91264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/tags?post=91264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}