Ah, kids. They're born, they do some cute stuff and then they become obnoxious teenagers.
So goes for NASA technology, it appears. The twin Mars Exploration Rovers were launched nine years ago (they grow up so fast when they're left to fend for themselves on a maybe desolate planet) for the purpose of learning more about the red planet. Like your average angsty teens, they have taken to drawing giant penises all over everything.