Opportunity: 3D replica of Block Island, meteorite on Mars

Scientists finally have their hands on a piece of Mars, sort of. Technology seemingly straight out of Star Trek allowed the replication of a rock on Mars using a 3D printer.  The result is a realistic looking, true-size facsimile of a Martian meteorite called “Block Island.” NASA’s Mars Exploration Rover Opportunity found it in 2009…. The real Block Island probably weighs a half-ton. You could easily carry its plastic twin under an arm… [More at link]