The Sun throws out violent solar flares. The magnetic particles hurtle towards the Earth at a fantastic speed. They slam into the Earth's magnetic field and create this spectacular Aurora Borealis, otherwise know as The Northern Lights.
Pointing a digital camera at the sun and taking a photgraph you see the small object on the right. Conspiracy theorists on Youtube say it is Planet X or Nibiru which will destroy Planet Earth in 2012. Wrong: It is light reflection.