After the successful on-orbit validation phase of the first four Galileo satellites; ESA, has now started deployment of the remaining units needed to build the full constellation of 30 satellites. Units 5 and 6 were launched in August 2014 on the wrong orbit but are now being saved. Soon units 7 and 8 will be sent to complement the first public global satellite navigation system. A huge undertaking which goes beyond the technology challenge - with the Galileo system Europe will provide a full range of services and applications across many different areas for citizens in Europe and beyond.