The spectacular videos show the green, red and purple lights of the Aurora Borealis or Northern Lights, shimmering over North America. Part of the footage captures a moving star field and another shows the city lights of the northern United States and Canada. The images were gathered by the crew of Expedition 30 on board the ISS between January 25 and February 26. They were compiled from a series of the still images by the Crew Earth Observations team at Nasa\'s Johnson Space Center. The Aurora Borealis \'light shows\' are associated with the solar wind, electrically charged particles continuously spewing outward from the sun.