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ESA’s ultra-precise deep-space navigation technique – Delta-DOR – tells us where spacecraft are, accurate to within a few hundred metres, even at a distance of 100 000 000 km.
In order to navigate a spacecraft around our Solar System we have to know how far away it is, how fast it is travelling and in what direction. Each of these steps are explained in this new infographic, "How not to lose a spacecraft".
Science is everywhere at ESA. As well as exploring the Universe and answering the big questions about our place in space we develop the satellites, rockets and technologies to get there. Science also helps us to care for our home planet. All this week we're highlighting different aspects of science at ESA. Join the conversation with #ScienceAtESA.