SCIENTIST Emily MacDonald is in for an out-of-this-world experience when she finds out what it would be like to live on Mars. Emily, 24, from Troon, Ayrshire, has been picked ahead of 400 other hopefuls to spend three weeks in a simulator that mimics the bitter cold, gravity and rugged conditions of the Red Planet. She will join five experts in a 27-foot dome in the Canadian Arctic. They will do experiments and test equipment to help the astronauts who eventually reach Mars. The Mars Arctic Research Station – or MARS – has been set up on a frozen island by the international Mars Society.