Major roadways and industrial areas are traced by bright white lighting, while the adjacent residential and commercial lands are characterized by more diffuse yellow-gold lighting. The image illustrates the extent of urbanization. Several smaller urban areas form a loose ring around the metropolitan area: Sorel-Tracy, Saint-Hyacinthe, Saint-Jean-sur-Richelieu, Salaberry-de-Valleyfield, Saint-Jerome, and Joliette are among those that can be readily identified in this image taken by an astronaut aboard the International Space Station (ISS). The city takes its name from Mont Royal, located at the city's center. Lawrence (image center) and Ottawa rivers (not visible). Montreal, Canada's second-largest city, is located on the Island of Montreal, at the confluence of the St.

Either thin, low clouds or perhaps fog is evident in the fuzzy character of patterns for some of the surrounding smaller cities while that of the warmer urban center is still clear and sharp. local time on the evening of February 4, 2003. The crew of the International Space Station acquired this image shortly after 7:22 p.m. Note London's two major airports, Heathrow and Gatwick, and the particularly bright, sinuous stretch of the Orbital to the south of the city. Interpreting the brightest areas as the most populated, the population density drops off rapidly from the bright urban center until it reaches the vicinity of the Orbital, an encircling roadway.īeyond lie isolated bright areas marking the numerous smaller cities and towns of the region and as far southeast as Hastings on the coast. This nighttime view of the British capital offers unique insight into the city's urban density and infrastructure as highlighted by electrical lighting. Here we see what some of Earth's major cities look like at night. But from high above the surface, astronauts and satellites look down on us and the blotches of light created by our urban areas. On Earth, we gaze up into the night sky to see the bright pinpoint-light of stars and our fellow planets.

Earth at night nasa