The total value of an artist’s artworks sold at auction over a specific period. This metric reflects the artist’s overall market activity and demand in monetary terms. The middle value of all realized ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

New forms of propulsion in space are usually welcomed by NASA, but the flatulence-power behind the crew of Apollo 16 was a very stinky and unwelcome one.

At the Descartes landing site on April 21, 1972, during the first of three extravehicular activities, the Apollo Lunar Surface Experiments Package was deployed. Astronaut Charles M. Duke, Jr., lunar ...