The Big Bang Theory › Season 11

S11 E4: The Explosion Implosion

Name: The Explosion Implosion
Released: 2017-10-16

As Howard worries about fatherhood, he and Sheldon bond when they jointly assemble a model rocket. Meanwhile, Penny bonds with Leonard's mother, Beverly, much to his concern.

Air date	Oct 16, 2017
Runtime	21 minutes
TMDB rating	★ 6.9/10