Northern lights are formed when electronically charged particles from the sun collide with atoms and particles within the earth’s atmosphere. The lights’ colors are determined by the height in which the particles come into contact. At a height of approximately 90 to 200 km, the particles come into contact with oxygen atoms, causing the most common green and the yellow-green color. Red, blue and purple lights occur through the stimulation of nitrogen. The lights are mostly visible on clear, dark nights and away from the light pollution of populated areas. The lights’ beauty can be magical and are an imperative sight for anyone visiting Iceland during winter. Several agencies offer northern light tours, conducted in areas of more propensity for the experience. Below are links to websites with northern lights predictions.
Day trips to the various museums, galleries and nearby natural wonders are quite enjoyable and relatively inexpensive.
Many companies specialize in organizing trips. Most of them have accessible websites where you can browse and book trips.