During the Apollo and Gemini missions, several astronauts reported unusual phenomena that still get discussed today in UFO research circles. Some examples that are often mentioned: • Apollo 10 (1969) – astronauts reported hearing a strange whistling or "space music" while on the far side of the Moon, where radio contact with Earth was impossible. NASA later suggested VHF radio interference as the explanation. • Gemini IV (1965) – astronaut James McDivitt reported seeing an unidentified object...