we've got three martian ashkelon. are they using on their heads to do it? they are wearing an augmented reality device and they are seeing the most accurate 3—d model of mars that's ever been made. this is the best reconstruction of mars that we can make, given the data that we have. i think this is kate's point of view you are seeing. this isn't cgi, these are real photographic images stitched together in a 3—d landscape. exactly. we built a landscape so our scientists and engineers can walk around on mars. why would they want to do that, is itjust a toy? it's not. the tricky thing about driving a robot on another planet is nobody can tell us where the robot is and what the surrounding scenery looks like. whenever we take a picture, you're taking the 3—d world and compressing it into 2—d and distorting it and losing information. around four processor oui’ information. around four processor our astronauts please. applause we're going to switch to another demo and bring victor on. next we've got a video of how they are