{"id":10834,"date":"2011-02-04T16:02:09","date_gmt":"2011-02-04T15:02:09","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/?p=10834"},"modified":"2011-02-04T21:33:54","modified_gmt":"2011-02-04T20:33:54","slug":"nr-30-2011","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2011\/02\/04\/nr-30-2011\/","title":{"rendered":"Nr 30 2011"},"content":{"rendered":"

\u00c5k aldrig offpist p\u00e5 Mars!<\/h2>\n

Att Mars-ytan kan svepas in i sandmoln, har vi v\u00e4l vetat \u00e4nda sen teleskopobservationer p\u00e5 1800-talet. Men nu kommer detaljrika bilder av skiftningar p\u00e5 Mars tack vare kameran kallad High Resolution Imaging Science Experiment (HiRISE)<\/span>, som finns ombord p\u00e5 NASA;s\u00a0 Mars Reconnaissance Orbiter<\/span>.<\/p>\n

Under tv\u00e5 Mars-\u00e5r har forskarna f\u00f6ljt f\u00f6r\u00e4ndringarna. I\u00a0 bilderna nedan befinner vi oss ganska n\u00e4ra\u00a0 norra polen, och med \u00e5rstiderna l\u00e4gger sig h\u00e4r p\u00e5 vintern lager av kolsyresn\u00f6\u00a0 \u00f6ver sanddynerna som i sin tur, med j\u00e4mna mellanrum och n\u00e4r sn\u00f6n f\u00f6r\u00e5ngats, rasar ihop. Forskarna talar om rena sandlaviner<\/a>. Jag skulle aldrig h\u00e5lla mig offpist h\u00e4r.<\/p>\n

\"\"<\/a>
Mars-ytan omdanas hela tiden. Fotocredit: NASA\/JPL-Caltech\/University of Arizona<\/figcaption><\/figure>\n

Id\u00e9n om att Mars-ytan liksom frysts fast i tiden h\u00e5ller inte. Det sker saker d\u00e4r \u00f6ver\u00a0 dagligen och stundligen.<\/p>\n

Svenskar i London<\/h2>\n

Jag ser p\u00e5 AstronomiGuiden att flera svenska amat\u00f6rer ska ta sig till helgens europeiska AstroFest i London. Det l\u00e5ter j\u00e4ttetrevligt och jag delar f\u00f6rhoppningen om rapporter fram\u00f6ver.<\/p>\n

Festens hemsida finns h\u00e4r.<\/a> Kolla bara utbudet av f\u00f6redrag!<\/p>\n

Var \u00e4r vi?<\/h2>\n

\"\"<\/a>Lars Olefeldt<\/strong> har f\u00f6rbindligen s\u00e4nt \u00f6ver en trevlig bild. Jag undrar var den \u00e4r tagen – n\u00e5nstans i England, f\u00f6r A4 \u00e4r v\u00e4l en typisk engelsk v\u00e4gbeskrivning? Vad \u00e4r “the Moon” f\u00f6r n\u00e5nting?<\/p>\n

V\u00e4dersolar p\u00e5 Titan?<\/h2>\n

\"\"<\/a>Saturnus-m\u00e5nen Titan f\u00e5r alltmer jordlika egenskaper. Nu har planetforskarna \u00e4ven hittat cirrusmoln p\u00e5 Saturnus drabant, allts\u00e5 tunna iskristallrika moln p\u00e5 h\u00f6g h\u00f6jd i atmosf\u00e4ren.<\/p>\n

Dessa moln b\u00f6r ge upphov till flotta v\u00e4dersolar, men jag har inte den matematiska f\u00f6rm\u00e5gan att r\u00e4kna p\u00e5 det. N\u00e5gon frivillig?<\/p>\n

Kvinnlig solpionj\u00e4r hyllades i Teheran<\/h2>\n

F\u00f6r en tid sedan hyllades i Teheran landets f\u00f6rsta kvinnliga astronom och fysikprofessor, Alenoush Terian<\/strong>, i samband med sin 90-\u00e5rsdag.<\/p>\n

Denna legendariska forskare f\u00f6ddes i en armenisk familj 1920 – armenierna \u00e4r j\u00e4ttestolta \u00f6ver henne – och hon gjorde stora insatser inom solforskningen p\u00e5 sin tid.<\/p>\n

Slutet \u00e4r n\u00e4ra!<\/h2>\n

Om inte den globala Maya-katastrofen intr\u00e4ffar 21 december 2012, ska jag skaffa en T-shirt med denna text:<\/p>\n

“Slutet \u00e4r n\u00e4ra f\u00f6r alla underg\u00e5ngsprofeter.”<\/strong><\/p>\n

\"\"<\/a>
Homer Simpson sl\u00e5r larm!<\/figcaption><\/figure>\n

\n","protected":false},"excerpt":{"rendered":"

\u00c5k aldrig offpist p\u00e5 Mars! Att Mars-ytan kan svepas in i sandmoln, har vi v\u00e4l vetat \u00e4nda sen teleskopobservationer p\u00e5 1800-talet. Men nu kommer detaljrika bilder av skiftningar p\u00e5 Mars tack vare kameran kallad High Resolution Imaging Science Experiment (HiRISE), som finns ombord p\u00e5 NASA;s\u00a0 Mars Reconnaissance Orbiter. Under tv\u00e5 Mars-\u00e5r har forskarna f\u00f6ljt f\u00f6r\u00e4ndringarna.… L\u00e4s mer »Nr 30 2011<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/10834"}],"collection":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/comments?post=10834"}],"version-history":[{"count":10,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/10834\/revisions"}],"predecessor-version":[{"id":10868,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/10834\/revisions\/10868"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=10834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=10834"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=10834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}