There is no such place as a Mary Lee or Dunkin Donuts over on Mars. At least, not yet. But several days ago the Mars Rover Opportunity caught a mysterious object in its lenses that looked awfully like a jelly doughnut. The strange thing is that it just happened to plop down in front of the camera. If you look at the picture above you’ll see that it’s obviously a before-and-after shot. The picture on the left was taken on December 26 of 2013 and the image on the right was taken 13 days later. The object wasn’t there before. So how did it get there?