AI-powered
podcast player
Listen to all your favourite podcasts with AI-powered features
2min chapter
#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
Lex Fridman Podcast
Will the Universe Expand Forever or Collapse on Itself?
Alex Philipenko: Will the universe expand forever or collapse on itself? That's one of the big questions of cosmology. We have evidence that the matter density is sufficiently low, he says. But not only that, there's this weird repulsive effect, we call it dark energy for want of a better term,. So if that continues, the universe will expand forever, but it need not necessarily continue. It could reverse sign, in which case the universe could, in principle, collapse at some point in the future.
00:00
Transcript
Episode notes
Get the Snipd
podcast app
Unlock the knowledge in podcasts with the podcast player of the future.
AI-powered
Discover
highlights
Listen to the best highlights from the podcasts you love and dive into the full episode
Save any
moment
Hear something you like? Tap your headphones to save it with AI-generated key takeaways
Share
& Export
Send highlights to Twitter, WhatsApp or export them to Notion, Readwise & more
AI-powered
podcast player
Listen to all your favourite podcasts with AI-powered features
Discover
highlights
Listen to the best highlights from the podcasts you love and dive into the full episode