Rockets appear as mighty machines that can lift a person into the sky and even serve as secret weapons in wartime. They also work as a metaphor for careers, reminding us to keep the engine running when launch plans stall. Kids in school build simple rockets to discover how flight works, treating each launch like a science experiment.
![“The whole procedure [of shooting rockets into space] . . . presents difficulties of so fundamental a nature, that we are forced to dismiss the notion as essentially impracticable, in spite of the author's insistent appeal to put aside prejudice and to recollect the supposed impossibility of…” quote by Richard van der Riet Woolley](https://sms4smile.com/quotes/i/fcd/richard-van-der-riet-woolley-1_accomplished_the-whole-procedure-of-shooting-rockets_271706.jpg)
![“[On the propulsive force of rockets] One part of fire takes up as much space as ten parts of air, and one part of air takes up the space of ten parts of water, and one part of water as much as ten parts of earth. Now powder is earth, consisting of the four elementary principles, and when the…” quote by Vannoccio Biringuccio](https://sms4smile.com/quotes/i/f3a/vannoccio-biringuccio-79468_air_on-the-propulsive-force-of-rockets-one-p_567057.jpg)
