The Big Bang Theory: Season 8 Episode 21: The Communication Deterioration
Starring: Johnny Galecki, Jim Parsons, Kaley Cuoco Sweeting, Simon Helberg, Kunal Nayyar, Mayim Bialik, Melissa Rauch
Length: 19 minutes
On Air Date: 16 Apr 2015
The Big Bang Theory: S08E21 Description: When Raj is asked to create a message on the off chance a NASA mission discovers alien life, the guys fight over what he should do, while Penny contemplates returning to acting.