Flight controllers are personnel who aid
space flight by working in such Mission Control Centers as
NASA's
Mission Control Center or
ESA's
European Space Operations Centre. Flight controllers work at computer consoles and use
telemetry to monitor various technical aspects of a
space mission in
real time. Each controller is an expert in a specific area and constantly communicates with additional experts in the "back room". The Flight Director, who leads the flight controllers, monitors the activities of a team of flight controllers and has overall responsibility for success and safety.