This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
USA night. en satellite view of the contiguous United States at night showing the density of artificial lights Usa night National Oceanic and Atmospheric Administration PDUSGovNOAA Usa night PDUSGov Night in the United States North America at night seen from space Satellite pictures of the United States