High-Flying NASA Mission Sets New GPS World Record

A NASA mission's GPS prowess is now part of the record books: The Magnetospheric Multiscale (MMS) mission just broke a Guinness World Record for highest altitude fix of a GPS signal. The four MMS satellites set the new space record by using GPS navigation at an altitude of 43,500 miles (70,000 kilometers) above Earth's surface. The satellites use GPS, which is a navigation system that pinpoints locations by checking in with devoted satellites in orbit, to stay in a tight flying formation as they