Het heelal groeit: hoe weten we dat?

Universiteit van Nederland June 15, 2025
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Universiteit van Nederland

@universiteitvannl

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De beste wetenschappers van Nederland delen gratis hun kennis met jou. De Universiteit van Nederland is een stichting met als missie om wetenschap toegankelijk te maken voor iedereen. We werken samen met de 14 Nederlandse universiteiten en samen zorgen we ervoor dat je wekelijks gratis kunt leren van de beste docenten van het land. Tips en feedback zijn welkom! Al onze video's vallen onder de Creative Commons-licentie (CC BY). Deel onze colleges dus zo veel als je wil (door ze te embedden via YouTube), maar vergeet onze naam zeker niet te vermelden.

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Schrijf je hier in voor onze nieuwsbrief: https://universiteitvannederland.substack.com/subscribe Het heelal is onvoorstelbaar groot, en wordt steeds groter. Sterker nog: het groeit zelfs steeds sneller. Maar hoe weten we dat eigenlijk? Honderd jaar geleden zette Edwin Hubble de astronomie op zijn kop. Hij ontdekte dat sterrenstelsels van ons af bewegen en dat het heelal dus aan het uitdijen is. In deze aflevering neemt natuurkundige Diederik Roest (Rijksuniversiteit Groningen) ons mee het heelal in. Hij legt hij ons uit hoe Hubble tot zijn ontdekking kwam, wat het dopplereffect ermee te maken heeft, en wat dit alles zegt over de toekomst van ons heelal. 00:00 Wat kun je meten met een radiotelescoop? 00:57 Hoe weten we dat de oerknal echt heeft plaatsgevonden? 02:10 Wat is het waarneembare heelal? 03:00 Hoe groot is het heelal? 04:26 Wat ontdekte Edwin Hubble over het heelal? 04:55 Wat is het Doppler Effect? 05:50 Hoe weten we dat het heelal uitdijt? 06:49 Waarom dijt het heelal versneld uit? 07:20 Wat gebeurt er in de toekomst met het heelal? Wil je ons iets vragen? Of heb je een opmerking? Dat kan via dit formulier: https://forms.gle/5YTUR72pTwzXRAFk6 Meer wetenschap? Check: Podcast op Spotify ► https://open.spotify.com/show/0z2ydI7p9BA6wxFiq8U0lF?si=a5bd687561d74550 Podcast op iTunes ► https://itunes.apple.com/nl/podcast/de-universiteit-van-nederland-podcast/id1385505692?mt=2 Onze website ► http://www.universiteitvannederland.nl/ Instagram ►https://www.instagram.com/UniversiteitNL Facebook ► https://www.facebook.com/UniversiteitvanNederland Over de Universiteit van Nederland: De Universiteit van Nederland heeft een onafhankelijke redactie die elke week podcasts, video’s en social posts maakt over wetenschappelijke onderwerpen. Wij geloven dat iedereen moet kunnen leren van de topwetenschappers die we hebben in Nederland. Zonder collegegeld of tentamens. Zet je nieuwsgierigheid aan. Volg de Universiteit van Nederland. Voor niet-commercieel gebruik is het toegestaan om fragmenten (mits de context behouden) te gebruiken. Vermeld wel altijd bron: Universiteit van Nederland. Bij twijfel, mail ons op [email protected]

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