In 1952, A Group of Three "Stars" Vanished. Astronomers Still Can't Find Them - Universe Today
universetoday.comSubmitted by universetoday8934 in science
In 1952, the Palomar Observatory imaged a close grouping of three point-like light sources, measuring 15th magnitude in brightness. It took another image an hour later, and the three objects had vanished. Follow-up observations scanned the area down to 21st m…