This is so not a dream.

One week after meeting Leonard Nimoy in his sleep on The Big Bang Theory, Sheldon (Jim Parsons) is about to come face-to-face with another one of his idols.

In these first looks from Thursday's episode, airing at 8/7c on CBS, Wolowitz gets to work with Stephen Hawking, and Sheldon becomes determined to do whatever it takes to meet the famous scientist as well.

Will he get the chance? It sure looks that way from these photos, but fans will have to wait and see until Thursday.

Who do you want to see on The Big Bang Theory next?

For more from the episode, watch the video below: