A stunning blue light likely caused by SpaceX Falcon 9 rocket fuel illuminated the night skies over Europe on Monday.

A Curious Blue Swirl of Light Captivates Sky Watchers in Europe 1:07 0:43 14:22 Two Astronauts on an 8-Day Mission That Turned Into a 9-Month Odyssey 2:05 0:36 2:58 1:03 0:33 0:22 ...