In 1974, to celebrate the re-opening of the Arecibo Radio Observatory, a signal created by Carl Sagan and Frank Drake was beamed into the universe in the hopes of contacting an alien species. Here's what it said.
In 1974, to celebrate the re-opening of the Arecibo Radio Observatory, a signal created by Carl Sagan and Frank Drake was beamed into the universe in the hopes of contacting an alien species. Here's what it said.