Satellite navigation

  1. Video content

    Video caption: How the satnav became a million dollar idea

    The BBC's Aaron Heslehurst explains how the satnav became a million dollar idea.

  2. Video content

    Video caption: Plane with the largest wingspan in the world takes flight

    Its wingspan measures 117m - the length of an American football field.

  3. Video content

    Video caption: SpaceX launches military satellite after four attempts

    The Falcon 9 rocket blasted off from Cape Canaveral on Sunday after four previous launches were cancelled.