Three days after lifting off from Earth, NASA’s Surveyor 2 robotic probe is en route to the moon when all contact is lost. Thanks to an engine failure, Surveyor 2 is left tumbling out of control, and does eventually reach the moon, slamming into the lunar dust of Copernicus Crater at a leisurely speed of 6,000 miles per hour – perfect for traversing the distance between Earth and moon in a hurry, but not so good for landing intact.
