How to put a human on Mars: Descent
22 July 2013 Last updated at 15:48 BST
An Imperial College team discuss how best to land a descent vehicle on the Martian surface.
They explain how a heat shield, parachutes and thrusters would all be used to ensure a crew would safely reach the ground.
Video journalist: Neil Bowdler. Animation: George Spencer, Joanne McDonald. Music: Spiro.