Will the new moon race turn Earth's nearest neighbor into a dumping ground?

An 8,800-pound (4,000 kilograms) Falcon 9 rocket stage hit the moon last Wednesday (Aug. 5), stirring lunar regolith in a massive plume of dust observable all the way from Earth. The rocket joined some 3,000 manmade objects scattered on the surface of our planet's companion. Some experts think it's about time we start treating the pristine lunar environment with a bit more respect.Around 200 tons of Earth stuff have been either deliberately left on or crashed into the moon since the beginning of