First 'moving' images of Northern Lights from space

New images of the Northern Lights, or Aurora Borealis, have been captured by Nasa using a new time-lapse photographic technique.

By combining hundreds of stills taken from the International Space Station, they have produced the first 'moving' images of the spectacle.

Nasa Earth Scientist Melissa Dawson explains how she happened on the technique almost by accident, when looking over other material from the ISS.