No...
Its the Aurora Borealis, a phenomena known as The Northern Lights. Norse mythology has it that these lights belong to the Valykries, female horse riders who serve Odin, the Norse God. They're more or less Norse Angels.
I think I'm going too much into mythology and am boring you, so I will now continue with my review...
Inter Dimensional Portals are up for grabs as people race to learn about some mysterious particles that have been discovered, which have some unique properties.
Lyra is a young girl (No, not that young, about thirteen or fourteen), who lives undisturbed at Jordan College. But when her friend Roger (Wink Wink) disappears under mysterious circumstances, she can't resist but to look for him. Together with her daemon, (The 'a' and the 'e' are sort of melded together in the book) Pantalaimon,(I'd say he's more like a demon, wouldn't you?) she must go to the North ( The North, The Northern Lights, get it?) where she discovers much more than some innocent (or should I say, guilty?) kidnappers. She must bargain with bears and consort with witches to find her friend.
And in the process she just might learn somethings she hardly expects (No slobbering for details now! Read the book yourself!!!) Secrets that should never be revealed.
I quite liked the book and hope you will too.
My rating on this book : 8/10 (Good)