searchlore

Back to Resource

All Segments

Sara Seager: Search for Planets and Life Outside Our Solar System | Lex Fridman Podcast #116

Sara Seager: Search for Planets and Life Outside Our Solar System | Lex Fridman Podcast #116

21 segments available

Sara Seager is a planetary scientist at MIT, known for her work on the search for exoplanets. Support this podcast by supporting our sponsors. Click links, get discount: - Public Goods at https://publicgoods.com/lex and use code LEX - PowerDot: https://powerdot.com/lex and use code LEX – Cash App – use code "LexPodcast" and download: – Cash App (App Store): https://apple.co/2sPrUHe – Cash App (Google Play): https://bit.ly/2MlvP5w EPISODE LINKS: Sara's Twitter: https://twitter.com/profsaraseager Sara's Website: https://www.saraseager.com/ The Smallest Lights in the Universe (book): https://amzn.to/3g3LfHA 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/ Full episodes playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOdP_8GztsuKi9nrraNbKKp4 Clips playlist: https://www.youtube.com/playlist?list=PLrAXtmErZgOeciFP3CBCIEElOJeitOr41 OUTLINE: 0:00 - Introduction 5:32 - Falling in love with the stars 9:55 - Are we alone in the universe? 15:27 - Seager equation for number of habitable planets 27:48 - Exoplanets 34:44 - Earth-like exoplanets 40:43 - Intelligent life 52:34 - Number of planets per star 55:09 - Space exploration 57:36 - Traveling to Proxima Centauri 1:00:52 - Starshade 1:07:34 - Using the sun as a gravitational lens 1:09:44 - Starshot 1:12:45 - Rogue planets 1:15:44 - The Smallest Lights in the Universe 1:30:15 - Book recommendations 1:37:48 - Advice for a young person 1:39:29 - Meaning of life CONNECT: - Subscribe to this YouTube channel - Twitter: https://twitter.com/lexfridman - LinkedIn: https://www.linkedin.com/in/lexfridman - Facebook: https://www.facebook.com/LexFridmanPage - Instagram: https://www.instagram.com/lexfridman - Medium: https://medium.com/@lexfridman - Support on Patreon: https://www.patreon.com/lexfridman

Segments Timeline

1
0:00 - 0:58
0:58 duration162 words

Introducing Sara Seager

In this segment, Lex Fridman introduces Sara Seager, a renowned planetary scientist at MIT, highlighting her expertise in exoplanets and her upcoming memoir, 'The Smallest Lights in the Universe.' He emphasizes the intertwining of her personal experiences with her scientific journey, setting the stage for a deep exploration of life beyond Earth.

"the following is a conversation with sarah seeger a planetary scientist at mit known for her work on the search for exoplanets which are planets outside of her solar system she's an author of two book..."

2
0:58 - 2:01
1:02 duration188 words

The Allure of Extraterrestrial Life

Lex discusses the human fascination with extraterrestrial life, reflecting on our civilization's longing to connect with the unknown. He shares his thoughts on the excitement and fear that come with contemplating the existence of life beyond our planet, creating a philosophical backdrop for the conversation.

"as a quick side note let me say that extraterrestrial life aliens i think represent our civilization longing to make contact with the unknown with others like us or maybe others that are very differen..."

3
2:01 - 5:32
3:30 duration567 words

Falling in Love with the Stars

Sara Seager shares her childhood memories of falling in love with the stars, recounting a poignant moment with her father while observing the moon. She reflects on the awe and curiosity that children possess, and how these early experiences shaped her passion for astronomy.

"sustainable healthy household products their products have a minimalist black and white design that i find to be just clean elegant and beautiful it's a style that makes me feel like i'm living in the..."

4
5:32 - 9:55
4:23 duration865 words

Are We Alone in the Universe?

Lex and Sara delve into the profound question of whether humanity is alone in the universe. Sara discusses the scientific approach to answering this question, emphasizing the need for data and the potential for future discoveries that could reveal the existence of extraterrestrial life.

"when did you first fall in love with the stars i think i've always loved the stars one of my first memory is of the moon i remember watching the moon and i was in the car with my dad who my parents we..."

5
9:55 - 15:27
5:32 duration992 words

The Seager Equation Explained

Sara introduces her own equation, the Seager Equation, which estimates the number of potentially habitable planets in the universe. She contrasts it with the Drake Equation, explaining how her work focuses on identifying planets that could support life, thus contributing to our understanding of extraterrestrial possibilities.

"you're a scientist an exo world class scientist planetary scientist astronomer uh now i'm a bit of an idiot who likes to ask silly questions so some questions are a little bit in the realm of speculat..."

6
15:27 - 27:48
12:21 duration2254 words

Exploring Exoplanets

In this segment, Sara discusses the fascinating world of exoplanets, detailing the methods used to discover them and the significance of finding Earth-like planets. She highlights the importance of studying these distant worlds to understand the potential for life beyond our solar system.

"talk about that is people know about the drake equation which is a very high level almost framework to think about what is the probability that correct me if i'm wrong that there's life out there uh a..."

7
27:48 - 34:44
6:56 duration1286 words

Earth-like Exoplanets and Their Importance

Sara elaborates on the characteristics that make certain exoplanets similar to Earth, discussing the conditions necessary for life. She emphasizes the significance of these findings in the broader context of astrobiology and the search for life in the universe.

"do you detect that type of gases that are on the planet from a distance and that's going back to that that's what people were skeptical about when i first started working on exoplanets long time ago p..."

8
34:44 - 40:43
5:59 duration1109 words

The Search for Intelligent Life

Lex and Sara explore the concept of intelligent life beyond Earth. They discuss the challenges of detecting such life and the implications of finding civilizations capable of communication, reflecting on humanity's place in the cosmos.

"we mentioned exoplanets what about earth like or i don't know what the right distinction is if is it habitable or is it earth-like planets but what are those different categories and how can we tell t..."

9
40:43 - 52:34
11:51 duration2055 words

Estimating Planets Per Star

Sara shares insights on the statistical estimates of how many planets exist around stars in our galaxy. She discusses the implications of these numbers for the search for life and the potential for discovering habitable worlds.

"land of speculation uh what about intelligent life uh us humans consider ourselves intelligent surprisingly or unsurprisingly do you think about from your perspective of looking at planets from a gas ..."

10
52:34 - 55:09
2:35 duration504 words

The Future of Space Exploration

In this segment, Sara discusses the future of space exploration and the technologies that will enable us to study distant exoplanets. She highlights the importance of continued investment in space science to unlock the mysteries of the universe.

"maybe getting a sense of numbers how many stars are there in maybe i don't know what the radius that's reasonable to think about i don't know if the observable universe is like way too big to think ab..."

11
55:09 - 57:36
2:27 duration423 words

Traveling to Proxima Centauri

Lex and Sara discuss the possibility of traveling to Proxima Centauri, the closest star system to Earth. They explore the challenges and potential methods for interstellar travel, emphasizing the importance of this endeavor in the search for extraterrestrial life.

"exploration there's been a lot of exciting developments with nasa with spacex with other companies successfully uh getting rockets into space with humans and getting them to land back uh especially wi..."

12
57:36 - 1:00:52
3:16 duration510 words

The Concept of Starshade

Sara explains the concept of a starshade, a proposed technology that could help astronomers detect exoplanets by blocking out starlight. She discusses its potential impact on the search for habitable worlds and the future of astronomical research.

"about visiting okay i apologize but i mean there's an exciting longing to um visit earth-like planets elsewhere so what's the closest uh earth-like planet you think is worth visiting and how how hard ..."

13
1:00:52 - 1:07:34
6:42 duration1355 words

Using the Sun as a Gravitational Lens

In this segment, Sara discusses the innovative idea of using the Sun as a gravitational lens to enhance our observations of distant exoplanets. She explains the scientific principles behind this concept and its potential applications in astronomy.

"well first of all we want to find the planets like earth first like just even finding those earth-like planets is a billion dollar endeavor billions of dollars endeavor and that's so hard because an e..."

14
1:07:34 - 1:09:44
2:10 duration409 words

The Starshot Initiative

Sara introduces the Starshot initiative, a groundbreaking project aimed at sending tiny spacecraft to the nearest stars. She discusses the technology and vision behind this ambitious endeavor, highlighting its significance for the future of space exploration.

"other topics that aren't mine but i still love them one of them let's just talk about it briefly because it's not a probe but it's the idea to send a telescope very far away to 500 times the earth sun..."

15
1:09:44 - 1:12:45
3:01 duration557 words

Rogue Planets: The Unknowns

Lex and Sara explore the intriguing concept of rogue planets—planets that do not orbit a star. They discuss the implications of these mysterious worlds for our understanding of planetary formation and the potential for life.

"what about the second the second one it's called starshot you know starshot means like big dreams and it's an initiative by the breakthrough foundation and starshot is the concept to send thousands of..."

16
1:12:45 - 1:15:44
2:59 duration468 words

The Smallest Lights in the Universe

Sara discusses her memoir, 'The Smallest Lights in the Universe,' reflecting on the personal stories and scientific insights that inspired her writing. She shares the significance of this work in the context of her journey as a scientist.

"your new book discussing rogue planet pso j318 i never said this out loud 0.522 so a rogue planet which is just this poetic beautiful vision of a planet that that as you right lurches across the galax..."

17
1:15:44 - 1:30:15
14:31 duration2492 words

Book Recommendations and Advice

In this segment, Sara shares her favorite book recommendations related to space and science. She also offers advice for young people interested in pursuing careers in science, emphasizing the importance of curiosity and perseverance.

"so the book is uh as a memoir is about your life and it uh weaves both your fascination with planets outside the solar system and the path of your life and you lost your husband which is a kind of cen..."

18
1:30:15 - 1:37:48
7:33 duration1499 words

Reflections on Life's Meaning

Lex and Sara engage in a philosophical discussion about the meaning of life, reflecting on their experiences and insights gained through their scientific journeys. They explore the intersection of science and existential questions.

"let me ask uh by way of recommendations i think a lot of people are curious about this kind of stuff what three books technical or fiction or philosophical or anything really uh had an impact on your ..."

19
1:38:06 - 1:39:02
0:56 duration202 words

The Journey to Astronomy

Sara Seager shares her personal journey into astronomy, detailing how her early interests in math and science led her to pursue a career in this field. She reflects on the pivotal moments that shaped her path, including the realization that being an astronomer was a viable career option, highlighting the importance of following one's passion.

"it's tough advice in a way but it is to find something that you love doing that you're also very good at in some ways the stars have to align because you've got to find that thing you're good at or th..."

20
1:39:02 - 1:40:24
1:21 duration264 words

The Meaning of Life

In a thought-provoking discussion, Seager and Fridman explore the existential question of why we are here. Seager reflects on the search for meaning in life and how the quest for exoplanets ties into this larger philosophical inquiry, leaving listeners with a sense of wonder about existence and our place in the universe.

"life i didn't know that you could be that for a job yeah i was good at all those things and although my dad wanted me to do something more practical where he could be guaranteed i could support myself..."

21
1:40:24 - 1:41:34
1:10 duration184 words

Closing Thoughts

In the closing segment, Lex Fridman expresses admiration for Sara Seager's work and contributions to science. He shares a quote from Carl Sagan, emphasizing the ongoing quest for knowledge and understanding in the universe. This segment wraps up the conversation, inviting listeners to reflect on the insights shared throughout the podcast.

"so like i said uh the book is excellent i admired you work from afar for a while i'm i think you're one of the the great stars at mit and makes me proud to be part of the community so thank you so muc..."