In 1974, a group of scientists sent a radio signal trying to contact intelligent aliens. Here's what they said. The Arecibo Message was arranged as part of a grand re-opening ceremony at the Arecibo Radio

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

Should Humans Try to Contact Alien Civilizations? Doug Vakoch is a former SETI member who founded METI International in 2015, an organization trying to craft and send targeted interstellar messages to

Scientists at an organization called Messaging ExtraTerrestial Intelligence (METI) are preparing to broadcast to a planet (Proxima b) orbiting the nearest star (Proxima Centauri) sometime in 2018. Image