The world runs on invisible satellite navigation signals: they fuel our society, generate economic growth and are integral to our security. But they can fade or vanish.

A pivotal step for more robust navigation is expanding to a system including a fleet of satellites in low Earth orbit, operating in a range of signals and frequencies.

ESA’s Celeste demonstrator mission will test the potential of such a system in providing significant augmentation and diversity to Galileo and other existing systems, increasing resilience and enabling new services to places where today’s satnav systems cannot reach.

Learn more about Celeste.