1 00:00:00,130 --> 00:00:04,190 Hi I'm John Keller. I'm the project scientist for NASA's Lunar 2 00:00:04,210 --> 00:00:08,310 Reconnaissance Orbiter mission. We're about to have a rare Christmastime 3 00:00:08,330 --> 00:00:12,450 full moon. And when you go outside to look at the moon, remember