Felix Yurievich Ziegel was a Soviet researcher, Doctor of Science and docent of Cosmology at the Moscow Aviation Institute, author of more than forty popular books on astronomy and space exploration, generally regarded as a founder of Russian ufology. Ziegel, the co-founder of the first officially approved Soviet UFO research group, became an overnight sensation when, on 10 November 1967, speaking on the Soviet central television, he made an extensive report on the UFO sightings registered in the USSR and encouraged viewers to send him and his colleagues first-hand accounts of their observations, which resulted in barrage of letters and reports. He died in November 1988, leaving 17 volumes of the unpublished research documents for his daughter to keep.