Lex Fridman Podcast

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

Nov 8, 2020

Astrophysicist Alex Filippenko from Berkeley explores the universe's most mesmerizing phenomena. He delves into the mysteries of dark energy and its role in the cosmos' expansion. Filippenko discusses the crucial impact of supernovae in creating the elements necessary for life and investigates the Fermi Paradox regarding intelligent extraterrestrial life. With insights on cosmic threats, he highlights the importance of observational data in scientific advancements and reflects on the human quest for sustainable living beyond our planet.

02:40:26

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Episode guests

Alex Filippenko

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Episode notes

Intro

4min

Exploring Educational Opportunities and Financial Innovations

2min

Unraveling Dark Energy

9min

From Geocentrism to Cosmic Threats

22min

Exploring the Cosmos: Between Dreams and Reality

10min

Exploring the Depth of Consciousness in AI and Human Emotions

2min

Journey Beyond: Life and Travel in the Cosmos

11min

The Rarity of Intelligent Life

18min

The Allure of UFOs and Scientific Skepticism

13min

10.

Unraveling the Expanding Universe

21min

11.

Recognition and Collaboration in Science

17min

12.

The Cosmic Symphony of Supernovae

18min

13.

Intuition and Visualization in Quantum Electrodynamics

3min

14.

Curiosity, Meaning, and Cosmic Reflection

7min

15.

Exploring the Multiverse: The Uniqueness of Our Universe

3min

Alex Filippenko is an astrophysicist and professor of astronomy at Berkeley. Please support this podcast by checking out our sponsors:
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EPISODE LINKS:
Alex’s Website: https://astro.berkeley.edu/people/alex-filippenko/

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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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