Lex Fridman Podcast

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

Nov 8, 2020

02:40:26

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Highlights

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Episode notes

Are There Any Extraterrestrials in Our Galaxy?

02:10

Is There a Quantum Theory of Gravity?

03:13

Is the Supernova the Engine of Creation?

03:12

Introduction

2min

Is There a Better Way to Live?

2min

Masterclass Podcast - CashApp

2min

Will the Universe Expand Forever or Collapse on Itself?

2min

The Dark Energy Is a New Energy That Fills Space

2min

Is There a Dark Energy?

5min

Copernicus - Is the Sun at the Center of the Solar System?

2min

Observations and Experiments Working Together With Hypotheses

4min

Is There a Heat Death of the Universe?

4min

10.

Asteroid Collision Leading to Mass Extinction

3min

11.

Is There a High Probability of a Collision?

2min

12.

I'm a Bit Disappointed by Extreme Competence, Right?

4min

13.

Are We Getting Rid of a Natural Pandemic?

2min

14.

Survivalists - The Only Real Survivors

2min

15.

Is Space Exploration a Pragmatic Idea?

3min

16.

The Challenges of Living on Mars?

2min

17.

Are There Any Exoplanet Homes?

5min

18.

Is There Something Beyond Just the Bits, the Ones and Zeros to Us?

5min

19.

How to Travel Faster Than Light Through a Wormhole

5min

20.

The Alcubierre Drive, Is It Possible?

2min

21.

Accelerating the Newtonian Kinetic Energy

2min

22.

Are We the Only Ones in Our Own Galaxy?

3min

23.

Are There Any Extraterrestrials in Our Galaxy?

2min

24.

Do You Think We'll Detect Intelligent Life?

2min

25.

The Fermi Paradox

2min

26.

The Perimene Paradox

4min

27.

The Fermi Paradox - Is There a Great Filter?

3min

28.

The Stephen Hawking Thing Isn't a Big Threat

2min

29.

UFO Sightings - Is That Really a Scientific Mindset?

3min

30.

Kryptonite - What Do We Do With That?

2min

31.

UFOs - I Don't Know What to Do With Them

3min

32.

I'm an Epistemist, Right?

2min

33.

UFO Research Is Interesting, Is There Any Evidence?

3min

34.

The Expansion of the Universe

2min

35.

The Speed of Light in Relativity

2min

36.

The Universe Expanded Like a Point

2min

37.

The Inflation Theory

3min

38.

What Happened Before T Equals Zero?

4min

39.

Is There a Quantum Theory of Gravity?

3min

40.

Extraordinary Claims Require Extra Evidence

2min

41.

The Nobel Prize for the Accelerating Expansion of the Universe

2min

42.

The Human Story of the Nobel Prize

4min

43.

Is It Possible That You Would Be One of the Nobel Prize Winners?

2min

44.

Are You in the Top Three?

2min

45.

The Nobel Prize for the Development of Physical Cosmology

6min

46.

Why the Nobel Prize Is a Good Idea

3min

47.

Deep Learning and the Oscars

2min

48.

How to Detect a Supernova

3min

49.

How Much Variation Is There Between Supernovae?

3min

50.

The White Dwarf Runaway

5min

51.

The Greatest Story Ever Telled

4min

52.

Is the Supernova the Engine of Creation?

3min

53.

Feynman Dyson Was the Most Intuitive

3min

54.

Feynman, I Encourage Questions

2min

55.

What Is the Meaning of Life?

2min

56.

Are We the Epitome of All Life?

2min

57.

The Universe Is a Multiverse

3min

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
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– Cash App: https://cash.app/ and use code LexPodcast to get $10

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