There are a lot of people who work at nasa who aren't engineers and scientists. There are people who build things, finance people, PR people, business management, HR, contracts, facilities, legal, maintenance, environmental, health&safety, pipefitters, plumbers, electricians, probably even carpenters- you name it. You'd be hard pressed to find a career that isn't applicable to a giant company like nasa. Find what you're good at and make it work.