Let's Make Robots!

payload

Robots in OUTERSPAAAAAACCCCCCCCEEEEEEE

10 pts to whoever gets the title reference.

I was perusing all the amateur DIY near-space balloon flights that have been gaining popularity lately, and a thought hit me.

Would it be possible to have a two stage flight; first stage would be the balloon and payload reaching a certain altitude. The second stage, when this specific altitude is reached, a ROCKET is fired from within the payload, taking it further into space (hopefully reaching escape velocity.