The Pioneer Plaque is a gold-anodized aluminum plaque that was launched into space aboard the Pioneer 10 and Pioneer 11 spacecraft in the early 1970s. It was designed to communicate information about humanity to any extraterrestrial life that might encounter the spacecraft. The plaque features a diagram of human figures, a map of Earth’s location, and symbols representing hydrogen, the most abundant element in the universe. The plaques were created by a team led by astronomer Carl Sagan and artist Franklin Chang-Díaz. They serve as a message of peace and curiosity, reflecting humanity's desire to connect with other intelligent beings in the universe. The Pioneer missions were significant milestones in space exploration, marking humanity's first journey beyond the asteroid belt.