Catalyst: Deep space telescope

“Catalyst” explores why astrophysicists launch a balloon carrying a 5,000-pound telescope into the stratosphere over Antarctica.

Sponsor message:

In this segment:

Phil Mauskopf, PhD
Sam Gordon
Adrian Sinclair

Sponsor message:

Sign up to receive the Arizona PBS Insider

Get up-to-the-minute information about your favorite programs and learn more about Arizona PBS news and events.

179 history documentaries you can watch right now (no membership required)

Have you decided that it’s high time to take a step back and look at the big picture? Whatever your motivation, we’ve got you covered.

Enjoy the best of Celtic Thunder

Celtic Thunder: Ireland is a revue show that combines 10 years of Celtic Thunder hits and focuses on their most popular songs of the last decade, their Irish and Celtic fan favorites.

'Red, White & Rock' delivers a patriotic celebration

Join Frankie Valli, The Righteous Brothers, Connie Francis and more for a 2002 patriotic celebration of America and pop oldies music in "Red, White & Rock."