{"id":76428,"date":"2018-04-22T15:44:52","date_gmt":"2018-04-22T14:44:52","guid":{"rendered":"http:\/\/www.astb.se\/cassiopeiabloggen\/?p=76428"},"modified":"2018-04-22T20:30:56","modified_gmt":"2018-04-22T19:30:56","slug":"nr-28-2018","status":"publish","type":"post","link":"https:\/\/www.astb.se\/cassiopeiabloggen\/2018\/04\/22\/nr-28-2018\/","title":{"rendered":"Nr 28 2018"},"content":{"rendered":"<h2>\n\t<b>Lagun-nebulosan enligt Hubble ST<\/b><br \/>\n<\/h2>\n<p class=\"text_intro pr_first\">\n\tDet &auml;r otroligt, men HST (aka Hubble Space Telesacope) <a href=\"https:\/\/www.spacetelescope.org\/news\/heic1808\/?lang\">har i 28 &aring;r synat Lagunnebulosan,<\/a> som vi ocks&aring; kallar M8 efter numret i Messier-katalogen. M8 ligger i Sagittarius\/Skyttens stj&auml;rnbild.\n<\/p>\n<p class=\"text_intro pr_first\">\n\tM8 ligger drygt 5000 ljus&aring;r fr&aring;n oss i Vintergatan och &auml;r en veritabel stj&auml;rnskapare, m&aring;tten uingef&auml;r 55&#215;20 ljus&aring;r. Den skenbara storleken p&aring; himlavalvet&nbsp;&auml;r tre ggr fullm&aring;nens och nebulosan kan anas med obev&auml;pnat &ouml;ga, s&ouml;der om &Ouml;rnen.\n<\/p>\n<p>\n\tI nebulosan skapas nya stj&auml;rnor den dag som &auml;r och naturligtvis kryllar det av unga stj&auml;rnor. Hubble-teamets Youtubefilm s&auml;ger allt!\n<\/p>\n<p>\n\t<iframe allow=\"autoplay; encrypted-media\" allowfullscreen=\"\" frameborder=\"0\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/JH9JVvKjG7s\" width=\"560\"><\/iframe>\n<\/p>\n<h2>\n\t<strong>NASA:s GPS-system<\/strong><br \/>\n<\/h2>\n<p>\n\t<strong>Lars Olefeldt <\/strong>ber&auml;ttar att <a href=\"https:\/\/www.livescience.com\/62309-galactic-positioning-system-nasa.html\">NASA:s planer p&aring; ett nytt GPS<\/a> har f&aring;tt ytterligare k&ouml;tt p&aring; benen. Systemet bygger p&aring; millisekundsnabba pulsarer, vars exakthet i de ultrasnabba rotationerna (r&ouml;ntgenspektrumet) &auml;r st&ouml;rre &auml;n t o m atomklockornas.\n<\/p>\n<p>\n\tGPS h&auml;r betyder &quot;Galactic Positioning System&quot;.\n<\/p>\n<p>\n\tVar det n&aring;n som sa att astronomins praktiska nytta &auml;r obefintlig? Sk&auml;ms!\n<\/p>\n<h2>\n\t<strong>Ljuset gick &#8211; tack f&ouml;r det<\/strong><br \/>\n<\/h2>\n<p>\n\tDen g&aring;ngna kv&auml;llen (21.4) gick ljuset i stora delar av v&auml;stra Malm&ouml;, vilket betydde en sak: Extra stj&auml;rnklart. Jag hann ut och magnitudbest&auml;mma Rho Cas, supernovakandidaten, innan ljuset kom tillbaka. Ingert ont som inte &#8230;osv!\n<\/p>\n<h2>\n\t<strong>J&auml;ttebr&aring;k om galaxen utan m&ouml;rk materia<\/strong><br \/>\n<\/h2>\n<p>\n\t<b>\u200b<\/b>Den som tog del av nyheten i W-bloggen nyligen om en galax, som sannolikt saknar m&ouml;rk materia, ska veta att debattens v&aring;gor g&aring;r h&ouml;ga mellan astronomerna. <a href=\"https:\/\/astrobites.org\/2018\/04\/16\/dancing-in-the-dark\/\">Den f&ouml;rtr&auml;ffliga astrobites-sajten <\/a>har haft detta &quot;meningsutbyte&quot; &#8211;&nbsp;BL&Aring;S UPP STRIPSEN&nbsp;p&aring; din sk&auml;rm f&ouml;r att njuta av huggen och slagen:\n<\/p>\n<p>\n\t<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2018\/04\/Da3xik-V4AEqy2l1.png\"><img decoding=\"async\" alt=\"Da3xik-V4AEqy2l[1]\" class=\"aligncenter size-medium wp-image-76446\" height=\"300\" src=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2018\/04\/Da3xik-V4AEqy2l1-104x300.png\" width=\"104\" srcset=\"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2018\/04\/Da3xik-V4AEqy2l1-104x300.png 104w, https:\/\/www.astb.se\/cassiopeiabloggen\/wp-content\/uploads\/2018\/04\/Da3xik-V4AEqy2l1-69x200.png 69w\" sizes=\"(max-width: 104px) 100vw, 104px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Lagun-nebulosan enligt Hubble ST Det &auml;r otroligt, men HST (aka Hubble Space Telesacope) har i 28 &aring;r synat Lagunnebulosan, som vi ocks&aring; kallar M8 efter numret i Messier-katalogen. M8 ligger i Sagittarius\/Skyttens stj&auml;rnbild. M8 ligger drygt 5000 ljus&aring;r fr&aring;n oss i Vintergatan och &auml;r en veritabel stj&auml;rnskapare, m&aring;tten uingef&auml;r 55&#215;20 ljus&aring;r. Den skenbara storleken p&aring;&hellip;&nbsp;<a href=\"https:\/\/www.astb.se\/cassiopeiabloggen\/2018\/04\/22\/nr-28-2018\/\" rel=\"bookmark\">L\u00e4s mer &raquo;<span class=\"screen-reader-text\">Nr 28 2018<\/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\/76428"}],"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=76428"}],"version-history":[{"count":20,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/76428\/revisions"}],"predecessor-version":[{"id":76451,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/posts\/76428\/revisions\/76451"}],"wp:attachment":[{"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/media?parent=76428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/categories?post=76428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astb.se\/cassiopeiabloggen\/wp-json\/wp\/v2\/tags?post=76428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}