NASA's Mercury Messenger Finds Clues to Planet's Origins Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email One of the first high-resolution photos of Mercury taken by the Messenger spacecraft. ( NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington ) Produced by Sitara Nieves and Elizabeth Ross Produced by PRI and WNYC