If alien civilizations rise and fall, they may leave behind artifacts long after they are gone. From abandoned megastructures to quiet machines orbiting dead stars, these relics could tell stories no ...

There are tens of billions of Sun-like stars in the Milky Way, an immense tally that encourages the possibility that extraterrestrial life peppers the universe. Finding evidence for aliens - even ...

First contact with alien civilizations won’t be with the beings themselves, but with their technology. By searching for these extraterrestrial artifacts, we embark on a journey through our solar ...