Scientists have revealed an incredibly detailed image of the moon's surface showing objects as small as five metres in diameter, captured with reflected radar signals. The image, released by the US's National Radio Astronomy Observatory, shows the landing site of NASA's Apollo 15 mission in 1971 and the surrounding grooves and jagged craters. To obtain the image, researchers used satellites that shoot a powerful radar signal towards the moon, which was then reflected back to a system of 10 radio telescopes in North America, called the Very Long Baseline Array. The final result marks a successful preliminary test of the highly complex radio telescope system.