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20. Andrea Ghez: The Hunt for a Supermassive Black Hole
Andrea Ghez shows how adaptive optics are helping astronomers understand our universe's most mysterious objects: black holes.
19. George Smoot on the Design of the Universe
An astrophysicist shows stunning images from deep-space surveys, and prods us to ponder how the cosmos got built.
18. Penelope Boston Says There Might Be Life on Mars
A scientist thinks there's a good chance that life might exist on Mars. She details how we should look and why.
17. George Dyson on Project Orion
An author spins the story of Project Orion, a nuclear-powered spacecraft that could have taken us to Saturn in five years.
16. Carolyn Porco: Could a Saturn Moon Harbor Life?
Carolyn Porco shares exciting new findings from the Cassini spacecraft's recent sweep of one of Saturn's moons, Enceladus.
15. Patricia Burchat Sheds Light on Dark Matter
Physicist Patricia Burchat sheds light on two basic ingredients of our universe: dark matter and dark energy.
14. Honor Harger: A History of the Universe in Sound
An artist-technologist listens to the noises of stars, including the sound of cosmic rays left over from the Big Bang.
13. Garik Israelian: How Spectroscopy Could Reveal Alien Life
A spectroscopist gives an accessible explanation of his field, which may be coming close to finding a life-friendly planet.
12. Freeman Dyson Says: Let's Look for Life in the Outer Solar System
A physicist suggests how we might find life on the moons of Jupiter and a few other places in the universe.
11. Carter Emmart Demos a 3D Atlas of the Universe
Carter Emmart demos stunning 3D visualization of the universe and explains how it's shared with facilities around the world.
10. Charles Elachi on the Mars Rovers
Charles Elachi shares stories from NASA's legendary Jet Propulsion Lab, including tales and video from the Mars Rover project.
9. Peter Diamandis on Stephen Hawking in Zero G
X Prize founder Peter Diamandis talks about how he helped Stephen Hawking fulfill his dream of going to space.
8. Lucianne Walkowicz: Finding Planets Around Other Stars
A TED Fellow has helped find 1,200 potential new planets. Some may have the right conditions for life.
7. Janna Levin: The Sound the Universe Makes
Physicist Janna Levin says the universe has a soundtrack that records some of the most dramatic events in outer space.
6. Dimitar Sasselov: How We Found Hundreds of Potential Earth-like Planets
An astronomer searches to answer questions about the origin and existence of biological life elsewhere (and on Earth).
5. Jill Tarter's Call to Join the SETI Search
The SETI Institute's Jill Tarter makes her TED Prize wish: to accelerate our search for cosmic company.
4. Brian Cox: Why We Need the Explorers
Brian Cox explains how curiosity-driven science pays for itself, powering innovation and appreciation of our existence.
3. Bill Stone Explores the World's Deepest Caves
A maverick cave explorer discusses his efforts to mine lunar ice for space fuel and to build a robot to study Jupiter's moon.
2. Phil Plait: How to Defend Earth from Asteroids
With humor, Phil Plait enthralls audience with all the ways asteroids can kill, and what we must do to avoid them.
1. Carolyn Porco Flies Us to Saturn
A planetary scientist shows images from the Cassini voyage to Saturn, whose frozen moon Enceladus seems to shoot jets of ice.
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Premiere DateNovember 14, 2025
