Kalgan might look like a brand-new setting introduced in Foundation season 3 on Apple TV+, but according to Isaac Asimov’s books, it’s a rich world with a long history as the Galaxy’s pleasure planet.

Foundation's new planet, Kalgan, will play a critical role in season 3. Here's what we know from the TV show and Isaac Asimov's books, so far.

AppleTV+ has a wide variety of critically acclaimed sci-fi shows that have become major hits. One of them is Foundation.