{"id": "ieBGae0rPa0", "uploader": "UiO Realfagsbiblioteket", "uploader_id": "realfagsbiblioteket", "uploader_url": "http://www.youtube.com/user/realfagsbiblioteket", "channel_id": "UCynaukrA8wxvJOcyFQJN3Jg", "channel_url": "http://www.youtube.com/channel/UCynaukrA8wxvJOcyFQJN3Jg", "upload_date": "20151212", "license": null, "creator": null, "title": "Viten p\u00e5 l\u00f8rdag: M\u00f8rk materie", "alt_title": null, "thumbnail": "https://i.ytimg.com/vi/ieBGae0rPa0/maxresdefault.jpg", "description": "Bare fem prosent av universets ingredienser er kjent for oss. Det meste av universet best\u00e5r av ukjente former for materie og energi.\n\n\u00c5 finne ut hva den m\u00f8rke materien best\u00e5r av er det neste store mysteriet i fysikk, og kanskje st\u00e5r vi n\u00e5 p\u00e5 terskelen til viktige gjennombrudd i jakten.\n\n3:05 Vitnesbyrd om det usynlige\nForedragsholder: Professor \u00d8ystein Elgar\u00f8y, professor ved Institutt for teoretisk astrofysikk\nHvorfor tror vi at mesteparten av massen i universet best\u00e5r av m\u00f8rk materie? Vi skal se hvordan Melkeveiens rotasjon og lysstr\u00e5lers ferd gjennom universet b\u00e6rer bud om det usynlige.\n\n30:45 Men, hva er egentlig denne m\u00f8rke materien?\nForedragsholder: Professor Are Raklev, professor ved Fysisk institutt\nF\u00f8rst og fremst er det mange ting vi vet at den ikke er, for eksempel alle enslige, forsvunne sokker. Vi har en mulig id\u00e9 om at m\u00f8rk materie er en ny type element\u00e6rpartikkel som ble produsert akkurat som vanlig materie i det tidlige universet, men etter hvert mistet kontakten med v\u00e5r verden.\n\n54:01 Hvordan kan vi se noe som er usynlig?\nForedragsholder: Professor Heidi Sandaker, professor ved Fysisk institutt\nFysikere leter etter spor av m\u00f8rk materie b\u00e5de p\u00e5 jorden og ute i verdensrommet.  I laboratoriet fors\u00f8ker vi ogs\u00e5 \u00e5 lage m\u00f8rk materie selv, utfordringen er \u00e5 finne den etterp\u00e5.\n\n\n---\n\nhttp://www.mn.uio.no/om/aktuelt/arrangementer/viten-pa-lordag/mork-materie.html", "categories": ["Education"], "tags": ["Dark Matter", "Viten p\u00e5 l\u00f8rdag"], "subtitles": {}, "automatic_captions": {}, "duration": 5300, "age_limit": 0, "annotations": null, "chapters": [{"start_time": 185.0, "end_time": 1845.0, "title": "Vitnesbyrd om det usynlige"}, {"start_time": 1845.0, "end_time": 3241.0, "title": "Men, hva er egentlig denne m\u00f8rke materien?"}, {"start_time": 3241.0, "end_time": 5300, "title": "Hvordan kan vi se noe som er usynlig?"}], "webpage_url": "https://www.youtube.com/watch?v=ieBGae0rPa0", "view_count": 1219, "like_count": 10, "dislike_count": 0, "average_rating": 5.0, "formats": [{"format_id": "249", "url": "https://r1---sn-ovgq0oxu-5goe.googlevideo.com/videoplayback?dur=5299.621&lmt=1449948156779155&c=WEB&fvip=5&clen=32217701&mime=audio%2Fwebm&gir=yes&key=yt6&gcr=no&requiressl=yes&source=youtube&sparams=clen%2Cdur%2Cei%2Cgcr%2Cgir%2Cid%2Cip%2Cipbits%2Citag%2Ckeepalive%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&signature=1277B63FFF3E3D69E62345CC28E74EC9B93E3228.8D4FB6DB81A94408042EBF075A645B1735292C1D&itag=249&id=o-AAjkVdJVjKW82GmppymKLUbjG_bQdVOQIHEg8fH0jLrh&keepalive=yes&mm=31%2C29&mn=sn-ovgq0oxu-5goe%2Csn-5goeen7y&expire=1546841990&mt=1546819696&ip=2001%3A700%3A100%3A118%3A%3A26&ei=JZsyXN62McaR7ATLrL_oCA&ms=au%2Crdu&ipbits=0&pl=40&mv=u&ratebypass=yes", "player_url": "/yts/jsbin/player_ias-vflWb9AD2/en_US/base.js", "ext": "webm", "format_note": "DASH audio", "acodec": "opus", "abr": 50, "filesize": 32217701, "tbr": 57.087, "quality": -1, "vcodec": "none", "downloader_options": {"http_chunk_size": 10485760}, "format": "249 - audio only (DASH audio)", "protocol": "https", "http_headers": {"User-Agent": "Mozilla/5.0 (X11; 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