All images have been taken by astronauts from NASA, CSA-ASC, ESA, ROSCOSMOS and JAXA. You can find the original pictures on Gateway to astronaut photography of Earth:
All Cities At Night website content has been developed by volunteers for outreach and scientific research. They can be used for that proposes by citation of the project.
Creative Commons License. Georeferenced Cities at Night images from ISS por Alejandro Sánchez de Miguel et al. Atlas of astronaut photos of Earth at night A&G (2014) is distributed under Creative Commons Non commercial attribution – Share 4.0 International licence.