Congrats to @AndyLapsa, @Rkt_Da, and @stoke_space (W21) on their $1B Series E! They're building Nova, a rocket designed to be fully reusable, meaning both stages fly back and fly again. Today's rockets mostly reuse the booster and throw away the upper stage on every flight. Stoke's upper stage returns too, protected by a novel heat shield ringed with 24 thrusters. Nova's first orbital launch is targeted for early 2027, and a larger version carrying 15 metric tons to orbit is already in…