Buzz Aldrin lands cameo on "The Big Bang Theory"

He's walked on the moon, danced for the mirrorball trophy and now, Buzz Aldrin is walking onto the set of  "The Big Bang Theory."

The 82-year-old  former astronaut and "Dancing with the Stars" competitor is making an cameo on the CBS sitcom, it was announced Tuesday.

According to Entertainment Weekly, Aldrin -- the second man to walk on the moon -- will appear as himself on the show's Halloween episode, "The Holographic Excitation."

The episode airs on Oct. 25 at 8 p.m. ET.