Right now there are around 1.800.000 images at the Johnson Space Center database (The Gateway of the Astronauts). Around 1.200.000 images were taken aboard the ISS (date 20/02/2014). However the number of the classified images is much smaller and there is no archive of georeferenced images. There is a project to classify the day time images (Image detective). But, the techniques that are used in this project are not useful for the classification of night time images. The reason is that the patterns on Earth are not the same during the day and night. This is why another technique is needed to classify these night time images. Our main objective is to study the light pollution that came from the cities. We want to stop the waste of energy and the destruction of the mighty ecosystem. Your collaboration it is really important because algorithms cannot distinguis between stars, cities, and other objects (i.e. moon). Thus, we need your help to assess the light pollution in our world!