If alien life were to ever discover humainty, what would you want them to know? Caitlin Ahrens explains what NASA decided on when they included golden discs on their deep space probes on this edition of Scratching the Surface.
If alien life were to ever discover humainty, what would you want them to know? Caitlin Ahrens explains what NASA decided on when they included golden discs on their deep space probes on this edition of Scratching the Surface.