[Radio message by Eugene Cernan from the Apollo 17 mission to the Moon]
"Hey Bob, I'm looking at what Jack was talking about and it's definitely not a particle that's nearby. It is a bright object and it's obviously rotating because it's flashing, it's way out in the distance, certainly rotating in a very rhythmic fashion because the flashes come around almost on time. As we look back at the earth it's up at about 11 o'clock, about maybe ten or twelve diameters. I don't know whether that does you any good, but there's something out there."