"Rare Opportunity: Intergalactic Introduction of Earth's Life Hits Auction Block"

Recordings made by late astronomer Carl Sagan to introduce life on Earth to aliens, known as the Voyager Golden Record, are up for auction. The recordings, which were sent off with NASA's Voyager probes in 1977, include music from around the world, humpback whale songs, greetings in 59 languages, and other sounds. Sotheby's auction house estimates that the recordings could fetch up to $600,000.