The Northern Lights could be seen pulsating through the sky in several cities throughout North America on Tuesday evening due to a rare geomagnetic storm. The colorful display was also caught on camera in areas within Canada and Europe. The geomagnetic storm, which is just one notch below the highest category of solar storm, began at about 10 a.m. ET on Tuesday, according to the Space Weather Prediction Center. The geomagnetic storm is the result of a pair of coronal mass ejections, or CMEs, that left the Sun on March 15 and are now interacting with Earth’s atmosphere and geomagnetic field.