Transcript
A (0:03)
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B (0:26)
Foreign.
C (0:30)
Does it ever feel like you're a.
B (0:32)
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A (1:01)
Hi, I'm Iambi Alec.
C (1:02)
And I'm Jonathan Cohen.
A (1:03)
And welcome to part two of our conversation with Dr. Avi Loeb. He's the Frank B. Baird Jr. Professor of Science at Harvard University. He's a best selling author. We've been discussing in part one, interstellar the Search for Extraterrestrial Life and Our future in the stars. Avi Loeb is an astrophysicist, and he is literally one of the people who testifies in Congress about asking the government to release unidentified objects and equipment for analysis. He is a deeply, deeply thoughtful and also very, very rigorously grounded in science astrophysicist. And we're so excited to get to talk to him in part two. We have so much more to tackle, including issues of religion, issues of where we fit in the cosmos, and what it might mean to actually make contact with extraterrestrials. So here is our part two conversation with Dr. Avi Loeb. Break it down.
C (1:58)
You mentioned that in 1.6 billion years, the sun will boil off all the oceans and we will have to go somewhere else. But you dropped it very casually. Do you want to expand on that?
B (2:10)
Yeah. So the sun is just a nuclear reactor, okay? A fusion reactor. And it has a limited amount of fuel, okay? So once it starts burning a significant fraction of the fuel, it will start dying. And within a billion years, it will become brighter, actually, to start with. And then it will boil off. The temperature on Earth will rise and all the oceans will evaporate. The Earth will become a desert, just like Mars. You know, Mars lost its oceans because it lost its atmosphere. But the Earth in the distant future will lose its oceans because of the sun getting brighter. And you know, when Elon Musk talks about saving humanity by going to Mars, you know, I don't see that as a great vision because Mars is just another rock nearby. So we go from one rock to another. You know, just like if you are in the jungle, you go from one tree to another and then it's a big success story. No, you go, you just found another tree. So who cares? Like the real advance of humanity was to go from those trees in Africa to a high rise in New York City or somewhere else, a big city. That's a big transition. We are not dependent on the bananas that are happening to grow in our environment. We actually can have agriculture that makes the amount of food that we need. You know that. So the next transition is actually to build a habitat in space, space that can support us. And by the way, I see that less of a jump than going from the jungles of Africa to a high rise in New York City. Going from a high rise in New York City to space is less of a transition as far as I can tell. And I see that as the future of humanity. I do think that we need to go to space. I don't think we should just target another rock that happened to be next to us like the moon or Mars, because that's very narrow minded, you know. So the moon will also be inhospitable in a billion years and we should build some habitat in space that supports us and then, then we can go places.
