SpaceX gains approval for largest satellite internet service, ever

Elon Musk's SpaceX just got permission to operate 4,425 satellites that could one day provide internet service from space. 
That would vastly increase access to the internet — especially in rural areas — and possibly create a ton of space junk. 
SEE ALSO: A SpaceX rocket launch blew a temporary hole in Earth's upper atmosphere
Not that SpaceX is anywhere near ready to flip the switch on a new internet service. So far, it's only launched two demo satellites. But this is a bi