A SpaceX rocket launch from Florida on Monday afternoon produced a dazzling display in the night sky above Europe, leading to ...

A Curious Blue Swirl of Light Captivates Sky Watchers in Europe 0:27 NOW PLAYING 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 ...

In short, the sky looks blue because the blue portion of sunlight is much more likely to bounce off the molecules in the atmosphere than the other colors of light. Now, picture the nitrogen and ...