Credit: Bill Nye

In a surprising reveal on Good Morning America today, September 4, we discovered that Bill Nye the Science Guy is joining Dancing With the Stars 2013! Though dance moves aren’t known for being scientific, he’s bringing his own moves to the ballroom.

Bill is paired with Tyne Stecklein, a new pro for Season 17. While she isn’t a troupe member or from So You Think You Can Dance, she has a lot of connections to DWTS — she co-starred with Julianne Hough in Burlesque and was a dancer in High School Musical 2 with other contestant Corbin Bleu.

This one really threw us for a loop, DWTS fans. Are you excited to see Bill’s dance moves? Sound off about the casting in the comments below!

Catch the Dancing With the Stars Season 17 premiere on Monday, September 16 at 8 p.m. ET/PT on ABC.