Apollo 15 15 separated from the booster, the S-IVB maneuvered away, and would impact the Moon about an hour after the crewed spacecraft entered lunar orbit, though due to an error the impact was away from the intended target. The booster's impact was detected by the seismometers left on the Moon by Apollo 12 and Apollo 14, providing useful scientific data. There was a malfunctioning light on the craft's service propulsion system (SPS); after considerable troubleshooting, the astronauts did a test burn of the system that also served as a midcourse correction. This occurred about 028:40:00 into the mission. Fearing that the
Apollo 20 hoax The hoaxer apparently used these photos to create the image of a pock-marked alien spacecraft on the moon. The NASA photos are real. However, NASA never claimed they include images of alien spacecraft. The object in question is apparently nothing more than a natural part of the lunar terrain. Apollo 16 photos of the same crater taken a year later show no evidence of artificial structures. In truth, Apollo 20 was a mission that never got off the ground—literally. It was one of three lunar missions NASA cancelled due to lack of funding along with Apollo missions 18 and 19.