Is the Universe Infinite or Finite?

Описание: Very limited time Black Friday deal: 20% off on all Hoverpens and free shipping to most countries with code SABINE:
North America / UK / Australia / International: https://bit.ly/sabine_novium
EU: https://bit.ly/sabine_noviumeu

Is the universe really infinite? Or could it close back on itself like a sphere? If it’s infinite, how can it expand? And is it true that there might be copies of you in it? Today I want to explain how much we know about those questions and what the expansion of space has to do with Hilbert's Hotel.

This video comes with a quiz which you can take here: https://quizwithit.com/start_thequiz/...

The Kurzgesagt video is here:    • The Paradox of an Infinite Universe  

🤓 Check out my new quiz app ➜ http://quizwithit.com/
💌 Support me on Donorbox ➜ https://donorbox.org/swtg
📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/
👉 Transcript with links to references on Patreon ➜   / sabine  
📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle...
👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl...
🔗 Join this channel to get access to perks ➜
   / @sabinehossenfelder  
🖼️ On instagram ➜   / sciencewtg  

#physics #space #universe