For some reason it reminds me of the Green laser over South East London - the Green Observatory marking the Meridian line between the East and West hemisphere... and more recently, the CERN blue beam over Norway (and similar blue beams sightings in other countries).
Celine, a few weeks ago I thought about going to Reykjavik for a March/April trip but then it was decided the new airport scanners would be implemented and that put a stop to my air travel and I wouldn't have time to go by train and boat.
This is a great link for those in the UK, and helpful for those in the rest of Europe, about to travel to other countries and continents via trains and boats:
http://www.seat61.com/
As for Yoko and John, I haven't heard her music and I'm not a fan of people (e.g. John) who buy into sex slavery.