Astrophysicists Discuss Whether JWST Discovered Alien Exoplanets
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Published 2024-07-09
Lisa tells us about breaking down the chemical signature of newfound rocky planets. When will we have telescopes that will see the surface of these exoplanets? If an alien on a different planet pointed a telescope at us, what signs of life would they see? Is there anything they could mistake us for? We explore how geology creates complicated atmospheres and of course the question: what is life?
Could life have landed here on a meteorite and blended in with other life on Earth? We discuss the universality of biology: do the rules of biology apply everywhere? How hard is life to get rid of once it's started? How fast could life evolve on another world? Plus, learn how Earth's oxygen levels contributed to the Jurassic period. We explore extremophiles and whether life could live on asteroids, icy moons, and large rocky planets: Super-Earths. What conditions trigger complex life?
Did human life come from panspermia? Find out about chirality and why we think that all Earth life started from the same source. Why do people really want to think we came from space? We talk about dimethyl sulfur as a biomarker and why its discovery on a Super-Earth may be both promising and potentially misleading. Can we figure out if we are alone or not?
Timestamps:
00:00 - Introduction: Lisa Kaltenegger
4:10 - Hunting Alien Earths
12:05 - What Would Aliens See If They Looked at Us?
18:13 - Is Every Animal on Earth From Earth?
23:03 - How Fast Could Evolution Go?
27:03 - Could Life Exist Outside of Planets?
32:36 - Life on a Super-Earth
38:04 - The Panspermia Question
41:44 - Biomarkers & Dymethyl Sulfide
47:40 - A Cosmic Perspective
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All Comments (21)
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What year do you think we'll finally discover extraterrestrial life? 👽 We'll check back here when it happens to see who guessed right!
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Hey Neil, I’m 70 years old now and I do remember watching Carl Sagan every single episode on PBS was on the edge of my seat and had never even remotely considered anything as well as everything he was all about Lisa that you had on today has that same love in her voice and intellect as Carl Sagan did.I hope she goes far and I hope you have her on again. What a beautiful example of a pioneering attitude and a love for life to make the world a better place thank you again for sharing your life with us through the sciences.
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I’m convinced that no subject in school was inherently boring, it was the subject’s teacher and their lack of passion and dedication to it. If this man was everyone’s high school science teacher, we would have a civilization on Mars with hovercrafts on it by now 😂
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Dr. Lisa's enthusiasm and smile are both so contagious! I would absolutely love a regular podcast all about her field of expertise!
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I can listen to this lady talking about octopus all day, her demeanour is so calm and gentle.
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I had to double take when Neil said Dr. Lisa’s last name😂
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Lisa is fantastic. What a passion for science! Please bring her on the podcast more often.
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Lisa Kaltenegger is so animated as she speaks that it's fascinating to watch her and listen. Loved this podcast for the information as well as just listening to the enthusiasm and excitement. It's what makes Dr. Tyson so popular--he's animated and his passion shows whenever he speaks on any subject but particularly in explaining mode.
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She talks with such passion, you can see she really enjoys her job and can't never get enough
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Now no StarTalk is complete without the Mr. Rogers heart-to-heart at the end. Thanks, Dr. Tyson for bringing the nostalgia.
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Kaltenegger is one of the most interesting guests I've seen on this show. I hope she comes back, or makes her own channel.
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Finally, the long lost cousin of Arnold Schwarzenegger, Lisa Kaltenegger
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Lol when they said "Octopusy"
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Two excellent science communicators, who are also admirers of the great Carl Sagan make an excellent 50 minutes on YouTube.
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Please don't ever stop making Startalk. No matter who hosts Science needs more stages to be talked about
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Neill's voice is a great asset when it comes to storytelling, But Ms. Kalteggers matches just the same bar. Both should be hired by audible or made the machines avatar.
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I read Lisa’s book a couple of months ago. It’s understandable to a layman and very entertaining. It’s one of those books that left me wanting to read more about the subject.
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She's one of the best star talk guests ever
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Man, I'm going back to the Planetarium this summer. Lisa Kaltenegger's awesome. I'm buying her book!
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You all have no idea how many short story ideas I get from these podcasts. Thanks for the inspiration. Now if I'd just submit them. LMBO