Earth is seen in this image taken by NASA's JunoCam as it flew by Earth
Media playback is unsupported on your device
Video

Satellites launched into space from Russia to map magnetic Earth

Three satellites, that will measure magnetic signals from the centre of the Earth, are being launched by the European Space Agency.

It is hoped the Swarm mission will improve navigational accuracy on Earth.

  • 22 Nov 2013
  • From the section Europe