27 JUL: Nasa astronaut Jack Fischer on board the International Space Station has shared time-lapse footage of a Northern Lights display around the earth. Find out more: bbc.in-aurora JackFischer ISS Exp52 Aurora TimeLapse Astronauts Nasa Space Science InternationalSpaceStation AuroraBorealis NorthernLights SouthernLights BBCShorts BBCNews @bbcnews