On 25 July, with the launch of four more satellites from Europe’s Spaceport in French Guiana, Europe’s Galileo constellation will come a giant leap nearer completion.

Since the launch of the ‘Galileo In-Orbit Validation Element’ test satellites GIOVE-A in 2005 and GIOVE-B in 2008 – with the task of securing radio bands and testing key technologies – ESA and Galileo have come a long way.

The deployment of the constellation and Galileo’s ground segment have been a massive undertaking. Talking to Paul Verhoef, Director of Navigation, we look back and consider the remarkable progress that has been made by Europe in satellite navigation and look towards the future and what it might hold.

This A&B Roll recalls the great moments that marked the building of the Galileo constellation. It includes an interview with Paul Verhoef, Director of Navigation, ESA in English and French.