Where can I find pictures of the Earth at night showing city lights?
Although astronauts sometimes take pictures of the Earth at night, their pictures only show small regions. NASA and NOAA scientists have made a composite form satellite images that shows the Earth at night. See an Earth Observatory Article on City Lights for more information. Nighttime satellite images from the Defense Meteorological Satellite Program are compiled on a website maintained by the International Dark Sky Association (http://www.darksky.org/).
