Wow. This is bad. I saw the following story on the Curiosity rover on Mars and all I could think of was "hmmm, would martian rock be good for setting a bevel or a finishing stone?" I gotta get some other interests.
http://www.businessinsider.com/curiosity-taps-into-its-first-martian-rock-2013-2
http://www.businessinsider.com/curiosity-taps-into-its-first-martian-rock-2013-2