It looked like someone was playing celestial tic-tac-toe last week here in north Texas. The first lines I saw in the sky on the morning of April 6, 2012 were some really big X’s. That was around 9:00 a.m. I meant to take a photo of them, but got distracted. (I was at work, so most likely the phone rang and drew me back into the office.) Around 10:15 a.m. I popped out of the office and noticed a big circular contrail in the sky. This time I snapped a couple of photos with my iPhone camera. I zoomed in…