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Posted by Aurora Borealis on November 11, 2003 at 11:14:18:
In Reply to: Science Q&A for Science Week - Q1 - Why is the Sea Blue Mammy? posted by M on November 10, 2003 at 19:33:04:
Q2 - Why is the Northen Lights composed of different colours ? Also in the recent display over the west of Ireland I noticed a lot of different shades of pinks and greens but no other colours, why is this ?