# What is the "baby rocket" attached to the booster on this rocket? [duplicate]

@OrganicMarble's answer shows some very cool looking historical rocket launches.

What is the smaller structure attached to the booster on the right side, that looks like a "baby rocket"?

• @OrganicMarble I see. I've voted to close as well, thanks!
– uhoh
Aug 3 '18 at 1:40
• @OrganicMarble is this similar to some of the things shown here? space.stackexchange.com/questions/20755/… oh, I mean in this answer: space.stackexchange.com/a/20763/12102
– uhoh
Aug 3 '18 at 1:44
• It is indeed, and I mentioned it in my answer to that duplicate question. Aug 3 '18 at 1:45