{"id":218,"date":"2013-12-03T10:41:38","date_gmt":"2013-12-03T10:41:38","guid":{"rendered":"http:\/\/www.123fakta.com\/da\/?p=218"},"modified":"2026-03-19T10:39:05","modified_gmt":"2026-03-19T10:39:05","slug":"tosiasioita-auringosta","status":"publish","type":"post","link":"https:\/\/www.123fakta.com\/fi\/facts-about-the-sun","title":{"rendered":"Tietoja auringosta"},"content":{"rendered":"<ol>\n<li><strong>Ik\u00e4:<\/strong>\u00a0Aurinko on noin 4,57 miljardia vuotta vanha ja samanik\u00e4inen kuin aurinkokuntamme.<\/li>\n<li><strong>Massa:<\/strong>\u00a0Aurinko sis\u00e4lt\u00e4\u00e4 99,86% koko aurinkokunnan massasta. Aurinko menett\u00e4\u00e4 4 miljoonaa tonnia massaa sekunnissa.<\/li>\n<li><strong>Maa:<\/strong>\u00a0Auringon sis\u00e4ll\u00e4 on tilaa 1 300 000 maapallolle. Aurinko painaa noin 333 000 kertaa enemm\u00e4n kuin maapallo.<\/li>\n<li><strong>T\u00e4hti:<\/strong>\u00a0Aurinko on t\u00e4hti - mutta vain pieni; on olemassa jopa 40 kertaa aurinkoamme suurempia t\u00e4hti\u00e4.<\/li>\n<li><strong>Linnunrata:<\/strong>\u00a0Aurinko sijaitsee Linnunradan galaksissa, jossa on 200-400 miljardia t\u00e4hte\u00e4. Linnunrata on vain yksi maailmankaikkeuden miljardeista galakseista.<\/li>\n<li><strong>Kierto:<\/strong>\u00a0Aurinko kiert\u00e4\u00e4 galaktista keskusta (Linnunradan keskusta) noin 26 000 valovuoden et\u00e4isyydell\u00e4. Sen kiertoaika on 225-250 miljoonaa vuotta.<\/li>\n<li><strong>Tiede:<\/strong>\u00a0Aurinkoa tutkitaan p\u00e4\u00e4asiassa avaruusluotaimilla (erityisesti SOHO-luotaimella). Vaikka ihminen on tutkinut aurinkoa jo pitk\u00e4\u00e4n, tied\u00e4mme siit\u00e4 suhteellisen v\u00e4h\u00e4n...<\/li>\n<li><strong>Auringonvalo ja aktiivisuus:<\/strong>\u00a0Auringonvalo saavuttaa maapallon hieman yli 8 minuutissa, ja se on my\u00f6s yli 30 000 vuotta vanhaa, koska sen syntyprosessi alkaa syv\u00e4ll\u00e4 auringon keskell\u00e4. Auringon pinnalla tapahtuvat muutokset ja aktiivisuus ilmenev\u00e4t auringossa auringonpilkkuina, auringonpurkauksina ja aurinkotuulena. Auringon aktiivisuus n\u00e4kyy ja tuntuu maapallolla etel\u00e4- ja revontulien muodossa sek\u00e4 h\u00e4iri\u00f6in\u00e4 radioviestinn\u00e4ss\u00e4mme ja s\u00e4hk\u00f6nsaannissamme.<\/li>\n<li><strong>Tuuli ja s\u00e4\u00e4:<\/strong>\u00a0Aurinko on tuulien ja s\u00e4\u00e4n liikkeellepaneva voima maapallolla, ja se aiheuttaa my\u00f6s noin 1\/3 merten vuorovesitoiminnasta (kuun osuus on loput).<\/li>\n<li><strong>Energia:<\/strong>\u00a0Auringonvalo on maapallon ensisijainen energianl\u00e4hde. Maan toinen energial\u00e4hde on toisen t\u00e4hden kuolemasta per\u00e4isin olevat halkeamiskelpoiset aineet, jotka ovat j\u00e4\u00e4neet maankuoreen. N\u00e4m\u00e4 aineet tuottavat geotermist\u00e4 energiaa (joka antaa voimaa esimerkiksi tulivuorille) ja mahdollistavat my\u00f6s sen, ett\u00e4 ihmiset voivat k\u00e4ytt\u00e4\u00e4 ydinreaktoreita.<\/li>\n<\/ol>\n<figure id=\"attachment_7933\" aria-describedby=\"caption-attachment-7933\" style=\"width: 790px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7933\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-solen-2.jpg\" alt=\"Fakta: Aurinko on yksi maailmankaikkeuden pienimmist\u00e4 t\u00e4hdist\u00e4.\" width=\"800\" height=\"764\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-solen-2.jpg 800w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-solen-2-300x287.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-solen-2-768x733.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/fakta-solen-2-13x12.jpg 13w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-7933\" class=\"wp-caption-text\">Attribuutio: Wikipedia.org<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fakta: Aurinko on vain pieni t\u00e4hti; on olemassa 40 kertaa suurempia t\u00e4hti\u00e4.<\/strong><\/em><\/p>\n<h2>Auringon kehityst\u00e4 koskevat teoreettiset tosiasiat<\/h2>\n<p>N\u00e4m\u00e4 tosiasiat eiv\u00e4t ole t\u00e4ysin tosiseikkoja - ne ovat vain uskottavia teorioita (mik\u00e4 p\u00e4tee my\u00f6s joihinkin edell\u00e4 mainituista 10 tosiasiasta!):<\/p>\n<ul>\n<li><strong>Luominen:<\/strong>\u00a0Aurinko syntyi, kun j\u00e4ttim\u00e4inen molekyylipilvi, joka koostui p\u00e4\u00e4asiassa heliumista ja vedyst\u00e4, luhistui. T\u00e4m\u00e4 romahdus synnytti todenn\u00e4k\u00f6isesti my\u00f6s monia muita t\u00e4hti\u00e4.<\/li>\n<li><strong>T\u00e4n\u00e4\u00e4n:<\/strong>\u00a0T\u00e4n\u00e4\u00e4n aurinko on elinik\u00e4ns\u00e4 puoliv\u00e4liss\u00e4 -<\/li>\n<li><strong>1 miljardi vuotta:<\/strong>\u00a0Noin 1 miljardin vuoden kuluttua maapallolla ei voi olla el\u00e4m\u00e4\u00e4...<\/li>\n<li><strong>2 miljardia vuotta:<\/strong>\u00a0Noin 2 miljardin vuoden kuluttua kaikki vesi maapallolla on haihtunut auringon menett\u00e4m\u00e4n aineen vuoksi.<\/li>\n<li><strong>4-5 miljardia vuotta:<\/strong>\u00a04-5 miljardin vuoden kuluttua aurinko supistuu, kuumenee ja kehittyy punaiseksi j\u00e4ttil\u00e4ist\u00e4hdeksi.<\/li>\n<li><strong>Maa:<\/strong>\u00a0Maa ei selvi\u00e4 auringon kehittymisest\u00e4 punaiseksi j\u00e4ttil\u00e4iseksi, sill\u00e4 aurinko laajenee niin paljon, ett\u00e4 sen s\u00e4de ylitt\u00e4\u00e4 Maan radan, mik\u00e4 tekee Maan olemassaolon mahdottomaksi. Auringon s\u00e4de on t\u00e4ss\u00e4 vaiheessa 250 kertaa suurempi kuin nykyisin.<\/li>\n<li><strong>Planeetat:<\/strong>\u00a0T\u00e4ll\u00f6in aurinkokunnan planeetat ovat kuitenkin jo ty\u00f6ntyneet ulos aurinkokunnasta, koska aurinko on menett\u00e4nyt noin 30% massastaan. Toisten teorioiden mukaan aurinko kuitenkin nielaisee planeetat t\u00e4ss\u00e4 vaiheessa.<\/li>\n<li><strong>Valkoinen k\u00e4\u00e4pi\u00f6:<\/strong>\u00a0Kun aurinko on ollut punainen j\u00e4ttil\u00e4inen, se kehittyy niin sanotuksi valkoiseksi k\u00e4\u00e4pi\u00f6ksi. Aurinko pysyy t\u00e4ss\u00e4 vaiheessa useita miljardeja vuosia.<\/li>\n<li><strong>Musta k\u00e4\u00e4pi\u00f6:<\/strong>\u00a0Auringon uskotaan kehittyv\u00e4n niin sanotuksi mustaksi k\u00e4\u00e4pi\u00f6ksi. Maailmankaikkeudessa ei kuitenkaan viel\u00e4 ole mustia k\u00e4\u00e4pi\u00f6it\u00e4, koska mustan k\u00e4\u00e4pi\u00f6n kehittymisaika on pidempi kuin maailmankaikkeuden viel\u00e4 nuori ik\u00e4, noin 13,7 miljardia vuotta.<\/li>\n<\/ul>\n<h2>Tietoja auringosta t\u00e4hten\u00e4<\/h2>\n<table border=\"1\">\n<tbody>\n<tr>\n<td class=\"sektion0\" colspan=\"2\">Sun-profiili<\/td>\n<\/tr>\n<tr>\n<td>Massa:<\/td>\n<td>1,9891\u00d710<sup>30<\/sup>\u00a0kg<\/td>\n<\/tr>\n<tr>\n<td>Halkaisija:<\/td>\n<td>1 392 000 km<\/td>\n<\/tr>\n<tr>\n<td>Perimeter:<\/td>\n<td>700 000 km<\/td>\n<\/tr>\n<tr>\n<td>Keskim\u00e4\u00e4r\u00e4inen et\u00e4isyys Maasta:<\/td>\n<td>149 600 000 km<\/td>\n<\/tr>\n<tr>\n<td>Valovoima:<\/td>\n<td>3.846\u00d710<sup>26<\/sup>\u00a0W<\/td>\n<\/tr>\n<tr>\n<td>Pintal\u00e4mp\u00f6tila:<\/td>\n<td>5.515 \u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"<p>Ik\u00e4: Aurinko on noin 4,57 miljardia vuotta vanha ja samanik\u00e4inen kuin aurinkokuntamme massa: Auringossa on 99,86% koko aurinkokunnan massasta. Aurinko menett\u00e4\u00e4 4 miljoonaa tonnia massaa sekunnissa Maa: Auringon sis\u00e4ll\u00e4 on tilaa 1 300 000 maapallolle. Aurinko painaa noin 333 000 kertaa ... <a title=\"Tietoja auringosta\" class=\"read-more\" href=\"https:\/\/www.123fakta.com\/fi\/facts-about-the-sun\" aria-label=\"Lue lis\u00e4\u00e4 aiheesta Faktoja auringosta\">Lue lis\u00e4\u00e4<\/a><\/p>","protected":false},"author":1,"featured_media":7932,"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-218","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>The Sun - Facts about the Sun&#039;s mass, size, circumference, etc.<\/title>\n<meta name=\"description\" content=\"Fact: The sun contains over 99% of the total mass of the solar system. 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