Caelum Incognitum — The interactive encyclopedia of ufology
Pioneer plaques
Astronomy, exobiology & SETI
Gold-anodized aluminum plaques attached to Pioneer 10 (1972) and Pioneer 11 (1973), designed by Frank Drake, Carl Sagan and Linda Salzman Sagan. They show a man and a woman, the Sun’s position relative to pulsars and the Solar System, as a symbolic message to possible civilizations.