and the D.C. Department of Transportation recently earned the support of the U.S. Commission of Fine Arts to line the south side of the Case Bridge with a single, linear blue accent light.

[Northern Lights Photos: The Amazing Auroras on Earth] It all comes down to Earth's magnetic tail, which is created ... lines arcing between the North and South Poles that can govern the behavior ...

Dazzling green and red light displays regularly dance across ... creating a housefly shape with a crooked tail for the latter case. The fluctuating solar wind “waggles” the tail, breaking ...