I was in Reykjavik 9 October 2012 at about 9:20 PM when the northern
lights decided to appear. What a wonderful display of greens above the city
lake - Tjornin. The green colour is produced as a result of a collision of
space particles against some gases 100-200 km above ground, Oxygen in particular.
This display lasted for at least half-hour and I am sure that
many tourists in Reykjavik did see the lights on one of the many northern
lights tours offered. I was booked to to do a private norhtern lights tour for a family but some
of the participants were rather young and could not stay up too late. As a result the cancelled the trip that night. Fifteen minutes later I saw the lights above Reykjavik City Hall.
