On July 19, 1952, the Palomar Observatory, located in San Diego County (California, USA), took pictures of the night sky as part of a project to detect unusual objects, such as asteroids.
About an hour apart, they photographed the same part of the sky and then compared the resulting images.
At 20.52 pm they photographed an area with very bright stars, including a cluster of three stars located close to each other. They were too bright to be asteroids, so everyone agreed that they were stars and not something else.
Nearly an hour later, at 9:45 pm, astronomers re-photographed the same sky region and were astonished to find that the cluster of three stars had vanished completely, not merely shifted. They appeared to have ceased to exist within that short time frame....<<<Read More>>>...
