NASA's asteroid mission to Apophis: Key for Earth's defense

USA TODAY - For more and to sign up click here Jim Bridenstine and Bill Nye, opinion contributors On Friday the 13th (yes, really) of April 2029, Earth will avoid an apocalyptic event by an astronomical hair's breadth as the asteroid Apophis, streaks by. It will come closer to Earth than the Moon — much closer in fact. It will come between us and the satellites that bring us radio, television and military…