![](https://image.tmdb.org/t/p/w342/ooBGRQBdbGzBxAVfExiO8r7kloA.jpg)
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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.
First Air Date : Sep 24, 2007
Last Air date : May 16, 2019
Episode : 279 Episode
Season : 12 Season
Runtime: 22 minutes
Studio: CBS
Country: United States of America