How big are black holes? Is time elastic? What is spacetime foam? Why is there a place called “elsewhere?” Enjoy this dazzling two-parter that starts with the absolute basics with NASA’s Goddard Theoretical Astrophysicist and Black Hole Theory Cosmologist Dr. Ronald Gamble, Jr. We talk busting of flim-flam, how do we image them, what's the most giant dense ... Show More
Feb 4
Genealogy (FAMILY TREES) Encore with Stephen Hanks
Histories, mysteries, memories and families: it’s time to clamber up our ancestral trees. Author and genealogist Stephen Hanks -- who teaches genealogy classes in Portland, Oregon and has contributed to PBS genealogy documentaries -- sits down to chat in this encore episode about ... Show More
1h 8m
Jan 28
Asinology (DONKEYS) with Faith Burden
Tall ears. Huge teeth. Underestimated wit. And vocalizations that would make a songbird envious. Let’s talk donkeys with researcher and Director at The Donkey Sanctuary, Asinologist Dr. Faith Burden. We cover pop culture donkeys, their road to domestication, how much they can car ... Show More
1h 15m
Jan 21
Paleohistology (WHY TEETH EXIST) with Yara Haridy
Excuse me, why do you have teeth? How did they get in your mouth and where did they come from? Let’s ask researcher, tooth enthusiast, and Paleohistologist Dr. Yara Haridy. She opened up the archives at Chicago’s Field Museum to chat about ancient skulls, drawers of bones, and th ... Show More
1h 24m
Oct 2025
PART TWO: Secrets of the Universe: What Happened Before The Big Bang, Life Across the Galaxy, Surviving a Black Hole & How We’re All Made of Stars | Astrophysicist Janna Levin
BLACK HOLES, THE BIG BANG & ALIEN LIFE: Astrophysicist Janna Levin Breaks Down the UniverseEver wondered what existed before the Big Bang? Or why all planets are different, and why Earth is so perfectly suited for life?In this mind-expanding episode of Mayim Bialik's Breakdown, r ... Show More
57m 41s
May 2017
100. Neil deGrasse Tyson (Astrophysicist) – The Only "-ist" I Am
Since 2008, Big Think has been sharing big ideas from creative and curious minds. Since 2015, the Think Again podcast has been taking us out of our comfort zone, surprising our guests and Jason Gots, your host, with unexpected conversation starters from Big Think’s interview arch ... Show More
47m 31s
Oct 2025
Secrets of the Universe: What Happened Before The Big Bang, Life Across the Galaxy, Surviving a Black Hole & How We’re All Made of Stars | Astrophysicist Janna Levin
BLACK HOLES, THE BIG BANG & ALIEN LIFE: Astrophysicist Janna Levin Breaks Down the Universe Ever wondered what existed before the Big Bang? Or why all planets are different, and why Earth is so perfectly suited for life? In this mind-expanding episode of Mayim Bialik's Breakdown, ... Show More
1h 5m
Apr 2024
Can Information Escape a Black Hole?
<p>Nothing escapes a black hole … or does it? In the 1970s, the physicist Stephen Hawking described a subtle process by which black holes can “evaporate,” with some particles evading gravitational oblivion. That phenomenon, now dubbed Hawking radiation, seems at odds with general ... Show More
29m 20s
May 2025
#468 – Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions
Janna Levin is a theoretical physicist and cosmologist specializing in black holes, cosmology of extra dimensions, topology of the universe, and gravitational waves. Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/ep468-sc See below for timestamp ... Show More
3h 7m