Mars and Uranus

Having learned the probe into my tumour missed the new bit and grabbed a piece of the old bit I could not help comparing it to the recent Mars expedition where  a rocket with probe was launched from earth and arrived without problem on the site it was aimed at, grabbed a bit of the surface for analysis and was a great success, whereby my probe only had to find a large tumour in my head. Missing it equates to the 

Mars probe actually landing on Uranus. Imagine getting a chunk of Uranus instead of Mars. It would be an international disaster.