May 28, 2026 · 2h 43m
Astrophysicist Michelle Thaller maps the outer limits of space and physics
#2506 - Michelle Thaller
Understanding the latest discoveries in astrophysics and quantum mechanics redefines our place in the universe and previews the technological future of human evolution.
- 1Atmospheric analysis of newly discovered exoplanets is bringing scientists closer to identifying potentially life-sustaining worlds.
- 2Supermassive black holes and quantum mechanics continue to challenge and reshape fundamental laws of physics.
- 3The long-term trajectory of human evolution may increasingly rely on direct integration with artificial intelligence.
The brief
Astrophysicist Michelle Thaller joins the podcast to explore the frontiers of modern space science, tracing the line between proven cosmic physics and the deep mysteries of the early universe.
The search for life has shifted toward newly discovered exoplanets, where atmospheric data suggests some worlds may possess the precise conditions necessary to sustain organic biology.
At the extreme edge of physics, supermassive black holes and quantum mechanics challenge our fundamental understanding of gravity, space-time, and how the cosmos first expanded.
Looking forward, the trajectory of human evolution may no longer be purely biological, as rapid advancements in artificial intelligence point toward a future of digital integration.
What was said on this episode
31 statements · 13 positive · 4 negative · 14 neutral
A million Earths could fit inside the Sun.
“if the sun were the size of a dot of an I, and you got to remember, you can fit a million Earths inside the Sun.”
Listen at 1:54
The Milky Way would exceed Earth in size under the stated scale.
“then the Milky Way galaxy would be bigger than the Earth.”
Listen at 2:20
The James Webb Space Telescope images billions of galaxies.
“with the James Webb Space Telescope, all of a sudden, you're taking pictures of billions of them”
Listen at 3:36
Stellar interiors are the universe’s source of atoms.
“The only thing in the universe that makes atoms is the interior of a star.”
Listen at 6:25
Saturn’s hexagonal jet stream spans roughly two Earth diameters.
“you could fit about two Earths across that and it's a hexagon jet stream.”
Listen at 9:21
A standing wave in Saturn’s jet stream produces its hexagonal shape.
“That wave kind of, kind of makes this hexagonal shape and then you cool everything down without friction.”
Listen at 10:58
Titan may have conditions compatible with life.
“It's one of the places that might be friendly for life.”
Listen at 11:57
Titan has lakes, rivers, and oceans of liquid hydrocarbons.
“there are oceans, there are rivers. The only place we know there are open great lake sized lakes on Titan.”
Listen at 12:30
Exoplanet discoveries may reach thousands annually.
“pretty soon it's going to be, I think, thousands of new planets every single year.”
Listen at 15:14
Future telescopes may detect biosignatures in exoplanet atmospheres.
“we might be able to actually get enough of a sense of the atmosphere of these planets to start looking for life signs.”
Listen at 17:19
Spectroscopy can identify an object’s chemistry molecule by molecule.
“you can measure the chemistry molecule by molecule.”
Listen at 18:25
Ignoring relativistic GPS corrections would create roughly six miles of daily error.
“within a day, if we didn't take into account the time difference these things are in that we'd be about six miles off.”
Listen at 22:01
Elapsed time varies with velocity and distance from massive bodies.
“Time is variable depending on how fast you're going and also how far off the Earth's surface you are”
Listen at 22:22
Space-station astronauts return roughly one-hundredth second younger after a year.
“If you are on the space station for a year, you come back about 1/100th of a second younger than you should be.”
Listen at 24:42
Objects with mass cannot reach light speed.
“anything with mass can't travel at the speed of light.”
Listen at 31:00
Quantum entanglement is experimentally real.
“we found out that it was real, that it can start off pretty simply.”
Listen at 33:57
The Event Horizon Telescope achieved Earth-sized resolution and imaged a black-hole shadow.
“they managed to make a telescope that's actually as big as the Earth, and they were able to take a picture of the dark parts of a black hole.”
Listen at 1:08:18
Observations reveal spacetime curvature around neutron stars.
“You can see space and time bending around these objects.”
Listen at 1:11:24
Neutron-star cores may contain a previously undescribed state of matter.
“at the very heart of these things, we're in a state of matter that we have no description for yet.”
Listen at 1:17:15
Early massive gas cores may have collapsed directly into black-hole seeds.
“the core basically collapsed into a black hole immediately, and it started pulling in material.”
Listen at 1:22:08
Black-hole jets arise from magnetized hot gas outside the black hole.
“what you're looking at with those jets is that that's just the magnetic field of a hot gas going around the black hole.”
Listen at 1:28:36
The early universe was opaque to light beyond the observable limit.
“Any farther away from that, the universe is opaque, literally in every direction on the sky.”
Listen at 1:32:40
Gravitational waves can pass through epochs opaque to light.
“Waves of space and time can come through. Gravitational waves can come through the.”
Listen at 1:39:04
Cosmic expansion has no central point of origin.
“The Big Bang did not have a center.”
Listen at 1:40:47
Cosmic microwave background temperature is nearly uniform in every direction.
“The crazy thing is it is exactly the same down to frank fractions of a degree in every direction on the sky.”
Listen at 1:51:45
Current physics cannot yet fully explain the Big Bang’s initial instant.
“in the case of what happened right at the instant of the Big Bang, I don't think we're there yet.”
Listen at 1:56:33
Human vision detects only a small fraction of electromagnetic radiation.
“The human eye only detects a tiny amount of light that exists in the universe.”
Listen at 2:09:35
Psilocybin should be considered optional therapy for bereavement.
“I thought it should be a therapy, an optional therapy, you know, that. That could be something that you give people to help them through that.”
Listen at 2:18:52
The Bennu asteroid sample contained nucleobases used in DNA and RNA.
“all of the nucleobases of our DNA, not just little molecules, the letters of our DNA and our RNA are in that sample.”
Listen at 2:37:26
Asteroid Bennu contained building blocks of genetic code.
“The letters of our genetic code were in that asteroid.”
Listen at 2:38:02
Space-delivered materials may provide life’s building blocks on planets.
“The building blocks just come down from space and they hit everywhere.”
Listen at 2:38:51
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