NASA's Pioneer and Voyager Missions Carry Humanity's First Interstellar Messages
NASA's Pioneer 10 and 11 probes, launched in the early 1970s, and the Voyager 1 and 2 probes, launched in 1977, carry humanity's first physical messages into interstellar space. The Pioneer probes are equipped with plaques designed by Carl Sagan and Frank Drake, which depict humanity and Earth's location. The Voyager probes carry Golden Records, also conceived by Sagan and Drake, containing sounds and images representing Earth's diversity of life and culture. These messages are intended for potential extraterrestrial civilizations or future human explorers. The Pioneer plaques are six-by-nine-inch gold-anodized aluminum plates with engraved pictorial messages, while the Voyager Golden Records are 12-inch gold-plated copper disks with encoded images and sounds. These missions marked a significant step in humanity's attempt to communicate beyond Earth and share information about our civilization.