Ever dreamed of being able to leave a trace that will surely outlive you for many generations? The Moon is the perfect place to do so! As it has almost no atmosphere, there is no wind or water erosion, and its surface is about the same now as it was 3 billion years ago. A footprint left on the Moon should last at least 10 million years. This would most probably happen to the footprints of the astronauts from the 1969 Apollo 11 mission.