After years of zooming through deep space, a presumed leftover piece of a Chinese rocket slammed into the Moon today, just as space tracking experts expected it would. At least, it should have hit the Moon around 7:30AM ET this morning, as long as the law of gravity has not changed. The collision brings an end to the rocket’s life in space and likely leaves a fresh new crater on the Moon that may be up to 65 feet wide. The now-expired rocket has caused quite a buzz this past month. First of all, the vehicle was never intended to...