Aerospace engineer Tracy Drain develops and operates "complex machines" that investigate planetary mysteries at NASA’s Jet Propulsion Laboratory. (And you thought your job was cool.) At Cosmic Adventures, presented as part of the National Geographic Live series, the super-achiever will spill the deets on engineering challenges and scientific discoveries from the Juno mission to Jupiter (Drain was deputy chief engineer for that mission—no big deal), as well as the Kepler mission, which surveys our lil' pocket of the Milky Way for other terrestrial planets. by Lindsay Costello