{"id":239,"date":"2013-12-03T14:48:24","date_gmt":"2013-12-03T14:48:24","guid":{"rendered":"http:\/\/www.123fakta.com\/da\/?p=239"},"modified":"2026-03-19T10:39:05","modified_gmt":"2026-03-19T10:39:05","slug":"tosiasioita-maailmankaikkeudesta","status":"publish","type":"post","link":"https:\/\/www.123fakta.com\/fi\/facts-about-the-universe","title":{"rendered":"Faktoja maailmankaikkeudesta"},"content":{"rendered":"<ol>\n<li><strong>T\u00e4htip\u00f6ly:<\/strong>\u00a0L\u00e4hes kaikki maapallon alkuaineet - ihminen mukaan lukien - on tehty t\u00e4htip\u00f6lyst\u00e4.<\/li>\n<li><strong>Ihmisen aivot:<\/strong>\u00a0Ihmisen aivot ovat maailmankaikkeuden monimutkaisin objekti - ainakin meid\u00e4n n\u00e4k\u00f6kulmastamme katsottuna<\/li>\n<li><strong>Linnunrata:<\/strong>\u00a0Maa on osa Linnunratagalaksia, joka on vain yksi miljardeista galakseista. Linnunradassa on 200-400 miljardia t\u00e4hte\u00e4, joista aurinko on vain yksi.<\/li>\n<li><strong>Liv:<\/strong>\u00a0On arvioitu, ett\u00e4 pelk\u00e4st\u00e4\u00e4n meid\u00e4n galaksissamme on noin 500 miljoonaa planeettaa, joilla voisi mahdollisesti olla el\u00e4m\u00e4\u00e4 (niin sanottuja \"Goldilocks-planeettoja\"). T\u00e4m\u00e4 arvio perustuu siihen, ett\u00e4 galaksissamme on 50 miljardia planeettaa ja ett\u00e4 n\u00e4ist\u00e4 vain 1% on Goldilocks-planeettoja.<\/li>\n<li><strong>Havaittava maailmankaikkeus:<\/strong>\u00a0Maailmassa on todenn\u00e4k\u00f6isesti yli 170 miljardia galaksia.\u00a0<a href=\"http:\/\/da.wikipedia.org\/wiki\/Observerbart_univers\">havaittava maailmankaikkeus<\/a>\u00a0- ja n\u00e4m\u00e4 galaksit edustavat todenn\u00e4k\u00f6isesti vain pient\u00e4 osaa koko maailmankaikkeuden galaksien kokonaism\u00e4\u00e4r\u00e4st\u00e4.<\/li>\n<li><strong>Multiversumit:<\/strong>\u00a0Jotkut tiedemiehet uskovat, ett\u00e4 on olemassa useita maailmankaikkeuksia yhdess\u00e4 \"multiversumissa\".<\/li>\n<li><strong>Infinity:<\/strong>\u00a0Useimmat tiedemiehet ovat yht\u00e4 mielt\u00e4 siit\u00e4, ett\u00e4 maailmankaikkeus on \u00e4\u00e4ret\u00f6n, mutta samalla se laajenee jatkuvasti.<\/li>\n<li><strong>Kaukaisin avaruusalus:<\/strong>\u00a0Voyager 1 l\u00e4hti aurinkokunnastamme 20. maaliskuuta 2013 ja on ainoa avaruusalus, joka on koskaan l\u00e4htenyt aurinkokunnastamme.<\/li>\n<li><strong>Kylm\u00e4hitsaus:<\/strong>\u00a0Kun kaksi metallia koskettaa avaruudessa toisiaan, ne liimautuvat enemm\u00e4n tai v\u00e4hemm\u00e4n pysyv\u00e4sti toisiinsa; t\u00e4t\u00e4 ilmi\u00f6t\u00e4 kutsutaan \"kylm\u00e4hitsaukseksi\" (Maassa metallien hitsaaminen vaatii suurta l\u00e4mp\u00f6\u00e4).<\/li>\n<li><strong>Palava j\u00e4\u00e4planeetta:<\/strong>\u00a0Noin 30 valovuoden p\u00e4\u00e4ss\u00e4 Maasta on planeetta nimelt\u00e4 Gliese 436 b, joka on t\u00e4ysin palavan j\u00e4\u00e4n peitossa. Gliese 436 b palaa, koska se on hyvin l\u00e4hell\u00e4 t\u00e4hte\u00e4\u00e4n. Se on j\u00e4\u00e4n peitossa, koska sen ilmakeh\u00e4 on niin voimakas, ett\u00e4 kaikki planeetan vesi on tiivistynyt erityiseen j\u00e4\u00e4muotoon, joka peitt\u00e4\u00e4 koko planeetan.<\/li>\n<\/ol>\n<figure id=\"attachment_7937\" aria-describedby=\"caption-attachment-7937\" style=\"width: 790px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7937\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-universet-2.jpg\" alt=\"Fakta: Maailmankaikkeus koostuu p\u00e4\u00e4asiassa tuntemattomasta &#039;pime\u00e4st\u00e4 aineesta&#039; tai &#039;pime\u00e4st\u00e4 energiasta&#039;.\" width=\"800\" height=\"640\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-universet-2.jpg 800w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-universet-2-300x240.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-universet-2-768x614.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-universet-2-15x12.jpg 15w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-7937\" class=\"wp-caption-text\">Attribuutio: Flickr.com: Sweetie187 - Flickr.com<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fakta: Suurin osa (95%) maailmankaikkeudesta koostuu tuntemattomasta 'pime\u00e4st\u00e4 aineesta'.<\/strong><\/em><\/p>\n<div>\n<h2>H\u00e4mm\u00e4stytt\u00e4vi\u00e4 faktoja maailmankaikkeudesta<\/h2>\n<ul>\n<li><strong>Kun katsot t\u00e4htitaivasta, n\u00e4et menneisyyden:<\/strong>\u00a0T\u00e4m\u00e4 johtuu siit\u00e4, ett\u00e4 t\u00e4hdet ovat hyvin kaukana Maasta, ja niiden valon saapuminen t\u00e4nne kest\u00e4\u00e4 vuosia. Auringonvalo saavuttaa Maan noin 8 minuutissa (Aurinko on Maata l\u00e4hin t\u00e4hti).<\/li>\n<li><strong>Hubble-teleskoopin avulla voimme n\u00e4hd\u00e4 miljardeja vuosia taaksep\u00e4in ajassa:<\/strong>\u00a0Er\u00e4\u00e4ss\u00e4 kuvassa n\u00e4imme 13 miljardia vuotta taaksep\u00e4in ajassa, mik\u00e4 on h\u00e4mm\u00e4stytt\u00e4v\u00e4\u00e4, kun maailmankaikkeus on vain noin 13,7 miljardia vuotta vanha.<\/li>\n<li><strong>Televisiosi n\u00e4ytt\u00e4\u00e4 maailmankaikkeuden luomisen:<\/strong>\u00a0Kun televisiosi ei ole viritetty tietylle kanavalle ja sen sijaan n\u00e4ytt\u00e4\u00e4 mustavalkoista v\u00e4lkynt\u00e4\u00e4 (eli \"muurahais-sotaa\") ja sille ominaista katkonaista TV-\u00e4\u00e4nt\u00e4, noin 1% kaikesta t\u00e4st\u00e4 v\u00e4lkynn\u00e4st\u00e4 ja kohinasta on alkur\u00e4j\u00e4hdyksen (maailmankaikkeuden luomisen) j\u00e4lkimainingeista.<\/li>\n<li><strong>On olemassa timanttiplaneetta:<\/strong>\u00a0T\u00e4htitieteilij\u00e4t ovat l\u00f6yt\u00e4neet planeetan, joka koostuu massiivisesta timantista ja jonka halkaisija on noin 40 200 kilometri\u00e4. Planeetan nimi on \"BPM 37093\", mutta sit\u00e4 kutsutaan my\u00f6s \"Lucyksi\" kappaleen \"Lucy in the Sky with Diamonds\" mukaan. Se sijaitsee noin 50 valovuoden p\u00e4\u00e4ss\u00e4 Maasta Kentauruksen t\u00e4hdist\u00f6ss\u00e4.<\/li>\n<li><strong>Pime\u00e4 aine:<\/strong>\u00a0Vaikka ihmiset ovat k\u00e4yneet avaruudessa useita kertoja, emme viel\u00e4k\u00e4\u00e4n tied\u00e4, mist\u00e4 avaruus koostuu. Avaruuden uskotaan koostuvan seuraavista aineista: 4,9% \"tavallisesta\" aineesta, 26,8% pime\u00e4st\u00e4 aineesta ja 68,3% pime\u00e4st\u00e4 energiasta. Kaksi viimeksi mainittua ainetta - jotka yhdess\u00e4 muodostavat noin 95% avaruudesta - ovat koostumukseltaan tuntemattomia aineita, joista ei tiedet\u00e4 juuri mit\u00e4\u00e4n.<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>T\u00e4htip\u00f6ly: Ihmisen aivot: L\u00e4hes kaikki elementit maapallolla - ihminen mukaan lukien - on tehty t\u00e4htip\u00f6lyst\u00e4: Linnunrata: Ihmisen aivot ovat maailmankaikkeuden monimutkaisin esine - ainakin meid\u00e4n n\u00e4k\u00f6kulmastamme katsottuna: Se on vain yksi miljardeista galakseista. Linnunrata sis\u00e4lt\u00e4\u00e4 ... <a title=\"Faktoja maailmankaikkeudesta\" class=\"read-more\" href=\"https:\/\/www.123fakta.com\/fi\/facts-about-the-universe\" aria-label=\"Lue lis\u00e4\u00e4 aiheesta Faktoja maailmankaikkeudesta\">Lue lis\u00e4\u00e4<\/a><\/p>","protected":false},"author":1,"featured_media":7936,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[69],"tags":[120],"class_list":["post-239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-the-universe","tag-adsense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Facts about the universe - 16 incredible facts about the universe<\/title>\n<meta name=\"description\" content=\"Fact: The universe is made up of dark matter, about which almost nothing is known. 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