Aliens..and not the Mexican kind

• Tiernan

  http://news.msn.com/science-technology/mystery-white-rock-inexplicably-appears-near-nasa-mars-rover
  
  Did a militant Martian protester throw a rock at the rover, saying Yankee Go Home?
• thavoice

  It was one of the martian gangs throwing rocks at an out-of-towner.
  
  
  Few options it could be, but how it got there is the $20 question....