logo
episode-header-image
Nov 2019
13m 14s

The search for our solar system's ninth ...

TED
About this episode
Could the strange orbits of small, distant objects in our solar system lead us to a big discovery? Planetary astronomer Mike Brown proposes the existence of a new, giant planet lurking in the far reaches of our solar system -- and shows us how traces of its presence might already be staring us in the face.

Hosted on Acast. See acast.com/privacy for more information.

Up next
Today
How AI could generate new life-forms | Eric Nguyen
If DNA is just a string of letters, could AI learn to read it … or even write it? Bioengineering researcher Eric Nguyen reveals how AI has upended the rules of biology, potentially creating a future where disease is cured with personalized medicine, extinct species are resurrecte ... Show More
13m 5s
Yesterday
TED Talks Daily Book Club: Intentional Ambition: Redefining Your Work for Greater Joy, Freedom, and Fulfillment | Rha Goddess
Rha Goddess is an entrepreneurial soul coach and author of the new book "Intentional Ambition: Redefining Your Work for Greater Joy, Freedom, and Fulfillment." In this TED Talks Daily Book Club interview with host Elise Hu, Goddess talks about moving forward after the 2020 pandem ... Show More
53m 52s
Aug 23
Why having fun is the secret to a healthier life | Catherine Price (re-release)
Have you had your daily dose of fun? It's not just enjoyable, it's also essential for your health and happiness, says science journalist Catherine Price. She proposes a new definition of fun -- what she calls "true fun" -- and shares easy, evidence-backed ways to weave playfulnes ... Show More
13m 26s
Recommended Episodes
Feb 2024
Exploring solar eclipses through time
This week on Planetary Radio, we delve into the evolution of humanity's relationship with one of our planet's most awe-inspiring phenomena: total solar eclipses. Ed Krupp, the director of Griffith Observatory in Los Angeles, will share insights from the fascinating field of archa ... Show More
52m 8s
Feb 2023
Defending the Planet from Asteroids
Our solar system contains millions of asteroids, orbiting our sun and rocketing through the night sky! Join scientists Kelly Fast, Tom Statler, and Davide Farnocchia as we discover what we can learn from these building blocks of the universe, and how NASA would respond if one wer ... Show More
27m 39s
Aug 2021
Lucy in the Sky With Asteroids
How did the planets form? How did life happen? Where did Earth’s water come from? To answer questions like these, scientists used to go big—looking at planets, dwarf planets, and moons—but now small is the new big. Technology is zooming in on the pint-size stuff—asteroids, comets ... Show More
30m 51s
Jul 2021
Let’s Go Planet-Hunting!
What do we know about the planets outside our solar system? NASA planet hunters Jessie Christiansen and Knicole Colon take us beyond...into the exciting world of exoplanets.   
19m 8s
Nov 2021
The hitchhiker’s guide to exoplanets and alien life
If television shows and movies are any indication, we humans spend a lot of our time subconsciously preparing for UFOs carrying maleficent aliens to descend on Earth. But should we rush to create an intergalactic battle plan? In actuality, finding otherworldly life won’t be so ea ... Show More
30m 44s
Nov 2023
How many planets are in space?
When you look up at the night sky, what do you see?  A few stars, or a satellite, maybe even one of the seven other planets in our solar system?  But how many planets are there in all of outer space? We asked astronomer Mark Popinchalk to help us find the answer! Got a question t ... Show More
4m 52s
Jun 2009
Telescopes that Rocked Our World
This year marks the 400th anniversary of Galileo’s use of the first telescope. On this week’s show, we reflect on how telescopes have shifted our perspective on how small we are in size, space, and time. We also discuss how they help astronomers discover new and interesting aspec ... Show More
56 m