Re: JPL/CalTech do incredible things!
LOL all the rocket "science" was done by Newton and then von Braun control-system types.
Most of 'practical rocketry' is engineering.
And perhaps some interesting business models.
For fun, look up Goddard's very common misconceptions about rocket stability and the
amusing demos it produced...
V2 had gyros and vane-control. Modern rockets tend to use gimbals. YMMV.