By Lynette Rice
March 12, 2012 at 12:00 PM EDT
Frederick M. Brown/Getty Images

A geek dream finally fulfilled!

Sheldon (Jim Parsons) will finally meet his hero, Stephen Hawking, in an upcoming episode of The Big Bang Theory. The CBS show is keeping details of Hawking’s appearance under wraps but EW did find out that the author of A Brief History of Time will appear in a scene with Parsons on April 5.

Hawking’s cameo will air the week after Leonard Nimoy finally shows up on the comedy. Nimoy, in fact, Tweeted @TheRealNimoy earlier today: “Spock on Big Bang Theory on 3/29. Stephen Hawking the following week. Logical.”