There’s something unsettling about reading an old book and seeing today’s world staring back at you. Not just the general ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

After a fairly eventful mission to the Moon's surface, Charles Duke left several items on the Moon, and a message to whoever ...