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 ...

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 ...

In space, no one can hear you scream, but they can sure hear you scratching your head as you try to make sense of the sprawling “Alien” universe. While Ridley Scott’s 1979 haunted-house-in-the-cosmos ...

There's a whole world under the surface and only Ron has any idea about it. And sometimes the two worlds collide, and sometimes they don't. Ron holds them at arm's length from each other. Watch every ...