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.

'Great Performances at the Met' returns to Sundays at 9 a.m.

"Great Performances at the Met" brings the best of the Metropolitan Opera into the homes of classical music fans across the United States.

'Unforgotten': A cold case tests old friendships

A third season of cold case investigations and emotional roller coasters in "Unforgotten" airs Saturdays at 9 p.m., beginning Sept. 14 on Arizona PBS.

'Shakespeare Uncovered' explores the Bard's greatest plays

On Sundays at 2 p.m., each episode reveals the extraordinary works of William Shakespeare and the still-potent impact his plays have today.