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Astronomy

A collection of TED Talks (and more) on the topic of Astronomy.

Video playlists about Astronomy

The mystery and wonder of stars

Zoom into the strange wonder and potential of stars in our universe.

What’s really floating out in space?

The answer is satellites, stars, planets, asteroids and maybe even aliens.

The lights and sounds of the universe

Find out what sound a black hole makes, if (possible) alien life is blocking starlight and other astounding things happening in our galaxy -- and beyond.

How we study space

Beyond our galaxy, there is much more to be discovered. Learn how we explore the universe with talks that are definitely out of this world.

See all playlists on Astronomy

Talks about Astronomy

Elise Cutts

Why are there two tides a day?

Lisa Kaltenegger

Are we alone in the universe? We're close to finding out

Nour E. Rawafi

The probe on a mission to touch the Sun

Scott Hershberger

The birth of the galaxy in 60 seconds

Tejal Gala

Are you more likely to explode or freeze in space?

Avi Loeb

My search for proof aliens exist

Alex Keshavarzi

3 mysteries of the universe — and a new force that might explain them

Kirsten Banks

The aboriginal knowledge stored in the stars

Ashkbiz Danehkar

Where did these gigantic space bubbles come from?

Sean P. S. Gulick

The asteroid that almost wiped out life on Earth

Fabio Pacucci

Gravity vs. Pressure: The battle that formed the universe

Beatriz Villarroel

Why we should search for alien artifacts

Jessie Christiansen

What the discovery of exoplanets reveals about the universe

Heidi Hammel and Nadia Drake

The marvels and mysteries revealed by the James Webb Space Telescope

Chanda Prescod-Weinstein

The search for the invisible matter that shapes the universe

Maria Popova

Humanity's search for cosmic truth and poetic beauty

See all talks on Astronomy

Exclusive articles about Astronomy

Gallery: 11 otherworldly photos of land, sea and sky at night

Due to light pollution near cities, many people can no longer see stars in their night skies, but astrophotographer Jack Fusco has traveled to dark places around North America to show us the wonders that still exist up there.

Posted Mar 2022

5 1/2 reasons you shouldn’t miss the solar eclipse, straight from an over-the-moon astrophysicist

Here’s why should stop what you’re doing and look up at the sky on August 21, according to astrophysics researcher Jedidah Isler.

Posted Aug 2017

The out-of-this-world strategies in place to stop an asteroid impact

NASA has a plan to combat rogue interstellar objects -- and even a Planetary Defense Officer. Asteroid hunter, space scientist and writer Carrie Nugent reveals the array of tactics, from the tested to the far-out.

Posted Mar 2017

See all articles on Astronomy