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#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe

Lex Fridman Podcast

Conversations that explore technology, history, philosophy, physics, mathematics, biology, chemistry, engineering, AI, robotics, programming, music, film, art, sports, psychology, neuroscience, geopolitics, business, economics, religion, astronomy, and the human condition with people from all walks of life.

Alex Filippenko is an astrophysicist and professor of astronomy at Berkeley. Please support this podcast by checking out our sponsors:
- Neuro: https://www.getneuro.com and use code LEX to get 15% off
- BetterHelp: https://betterhelp.com/lex to get 10% off
- MasterClass: https://masterclass.com/lex to get 15% off annual sub
- Cash App: https://cash.app/ and use code LexPodcast to get $10

EPISODE LINKS:
Alex's Website: https://astro.berkeley.edu/people/alex-filippenko/

PODCAST INFO:
Podcast website: https://lexfridman.com/podcast
Apple Podcasts: https://apple.co/2lwqZIr
Spotify: https://spoti.fi/2nEwCF8
RSS: https://lexfridman.com/feed/podcast/
YouTube Full Episodes: https://youtube.com/lexfridman
YouTube Clips: https://youtube.com/lexclips

SUPPORT & CONNECT:
- Check out the sponsors above, it's the best way to support this podcast
- Support on Patreon: https://www.patreon.com/lexfridman
- Twitter: https://twitter.com/lexfridman
- Instagram: https://www.instagram.com/lexfridman
- LinkedIn: https://www.linkedin.com/in/lexfridman
- Facebook: https://www.facebook.com/LexFridmanPage
- Medium: https://medium.com/@lexfridman

OUTLINE:
Here's the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time.
(00:00) - Introduction
(06:36) - Universe expansion
(08:00) - Dark energy
(15:28) - Scientific revolutions
(27:18) - Asteroid hitting Earth
(30:50) - Giant solar flares and the power grid
(37:50) - Elon Musk and space exploration
(42:41) - Exoplanets
(50:03) - Traveling close to the speed of light
(52:13) - Traveling faster than the speed of light
(1:00:39) - Intelligent life in the universe
(1:04:14) - Fermi Paradox
(1:13:52) - Finding alien life would be bad news
(1:18:49) - UFO sightings
(1:31:58) - Universe expansion speed
(1:36:42) - The universe is infinite
(1:40:58) - What happened before the Big Bang?
(1:45:14) - Roger Penrose
(1:48:48) - Nobel Prize for the accelerating universe
(2:10:23) - Supernova
(2:21:47) - The greatest story ever told
(2:25:44) - Richard Feynman
(2:32:37) - Meaning of life

Alex Filippenko is an astrophysicist and professor of astronomy at Berkeley. Please support this podcast by checking out our sponsors: 
– Neuro: <a href="https://www.getneuro.com">https://www.getneuro.com</a> and use code LEX to get 15% off 
– BetterHelp: <a href="https://betterhelp.com/lex">https://betterhelp.com/lex</a> to get 10% off 
– MasterClass: <a href="https://masterclass.com/lex">https://masterclass.com/lex</a> to get 15% off annual sub 
– Cash App: <a href="https://cash.app/">https://cash.app/</a> and use code LexPodcast to get $10
EPISODE LINKS: 
Alex’s Website: <a href="https://astro.berkeley.edu/people/alex-filippenko/">https://astro.berkeley.edu/people/alex-filippenko/</a>
PODCAST INFO: 
Podcast website: <a href="https://lexfridman.com/podcast">https://lexfridman.com/podcast</a> 
Apple Podcasts: <a href="https://apple.co/2lwqZIr">https://apple.co/2lwqZIr</a> 
Spotify: <a href="https://spoti.fi/2nEwCF8">https://spoti.fi/2nEwCF8</a> 
RSS: <a href="https://lexfridman.com/feed/podcast/">https://lexfridman.com/feed/podcast/</a> 
YouTube Full Episodes: <a href="https://youtube.com/lexfridman">https://youtube.com/lexfridman</a> 
YouTube Clips: <a href="https://youtube.com/lexclips">https://youtube.com/lexclips</a>
SUPPORT & CONNECT: 
– Check out the sponsors above, it’s the best way to support this podcast 
– Support on Patreon: <a href="https://www.patreon.com/lexfridman">https://www.patreon.com/lexfridman</a> 
– Twitter: <a href="https://twitter.com/lexfridman">https://twitter.com/lexfridman</a> 
– Instagram: <a href="https://www.instagram.com/lexfridman">https://www.instagram.com/lexfridman</a> 
– LinkedIn: <a href="https://www.linkedin.com/in/lexfridman">https://www.linkedin.com/in/lexfridman</a> 
– Facebook: <a href="https://www.facebook.com/LexFridmanPage">https://www.facebook.com/LexFridmanPage</a> 
– Medium: <a href="https://medium.com/@lexfridman">https://medium.com/@lexfridman</a>
OUTLINE: 
Here’s the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time. 
(00:00) – Introduction 
(06:36) – Universe expansion 
(08:00) – Dark energy 
(15:28) – Scientific revolutions 
(27:18) – Asteroid hitting Earth 
(30:50) – Giant solar flares and the power grid 
(37:50) – Elon Musk and space exploration 
(42:41) – Exoplanets 
(50:03) – Traveling close to the speed of light 
(52:13) – Traveling faster than the speed of light 
(1:00:39) – Intelligent life in the universe 
(1:04:14) – Fermi Paradox 
(1:13:52) – Finding alien life would be bad news 
(1:18:49) – UFO sightings 
(1:31:58) – Universe expansion speed 
(1:36:42) – The universe is infinite 
(1:40:58) – What happened before the Big Bang? 
(1:45:14) – Roger Penrose 
(1:48:48) – Nobel Prize for the accelerating universe 
(2:10:23) – Supernova 
(2:21:47) – The greatest story ever told 
(2:25:44) – Richard Feynman 
(2:32:37) – Meaning of life

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#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe

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