The Northern Lights were visible throughout Colorado Thursday night after a major solar system hit Earth.
A cloud was launched by a large flare from the Sun's outer layer on Sunday, causing it to hurtle through space at more than 2 million mph. Officials said the storm could've disrupted power and communication systems, leading to the National Oceanic and Atmospheric Administration’s Space Weather Prediction Center, headquartered in Boulder, to issue a rare warning.
It also meant a big light show throughout parts of Colorado.
Here are photos of the celestial event as seen by Colorado Public Radio staff: