Northern Lights "Aurora Borealis" cause

[sk8er4514]

http://blog.wired.com/wiredscience/2008/07/scientists-disc.html

pretty sweet

 

[nikokapo]

that's so cool!

i've always wanted to see one IRL


but i cant understand why magnetic fields can shift colour :S

 

[sk8er4514]

yeah it would be awesome to see.. and im not too sure either. the experts only found out from trial and error experiments, so I don't think that many people understand it yet.