In many North American cities, older neighborhoods have less regular street patterns and light green mercury vapor lighting, while newer cities, especially in the western United States, have street patterns aligned to the compass directions and use orange sodium vapor lighting. Orbiting astronauts see our planet for what it is—an oasis in space. Image ISS016-E-26150 was taken on January 31, 2008, with an 85 mm lens. By night (lower), the region’s ten million people cannot be missed. Transportation corridors and major commercial development, such as ports, shopping centers, and cultural icons—like the Las Vegas strip—jump out of the landscape. They include the regular patterns of irrigated cropland, straight lines of roads and railways running across continents, reservoirs on river systems, and the cement rectangles of ports and seawalls along coastlines. More roads will connect those cities to form an illuminated, lace-like web on the habitable parts of the continents. But what does the view of Earth at night look like? In late 2007 through early 2008, Expedition 16 Flight Engineer Dan Tani acquired a number of striking images of cities at night, including some exciting images taken with the longer, 400 mm lens, producing images with an estimated ground resolution of less than 10 meters. This composite image, one of three new full-hemisphere views, provides a view of the Americas at night. Each regional tile is 21600x21600 and available as a GeoTIFF or a JPEG. NASA scientists are releasing new global maps of Earth at night, providing the clearest yet composite view of the patterns of human settlement across our planet. Flight Center. by Cindy Evans & Will Stefanov • design by Robert Simmon • April 22, 2008. Border cities like Ciudad Juaréz, Mexico, and El Paso, Texas, illustrate different city patterns side-by-side, suggesting cultural influences on the development and growth of cities and infrastructure. In late 2002 and early 2003, astronaut Don Pettit, part of International Space Station Expedition 6, spent some time accumulating spare parts from around the space station, and constructed a device called a barn-door tracker. Remote Sensing, Atmosphere A catalog of NASA images and animations of our home planet Go. Live streaming views from the NASA High Definition Earth Viewing (HDEV) cameras on the International Space Station (ISS). They have provided a broad, beautiful picture, showing how humans have shaped the planet and lit up the darkness. Land City lights provide sharp boundaries that delineate the densest concentrations of people, a characteristic that has been used to assess the effect of urbanization on Earth’s ecosystems. With daylight illumination, an onboard camera can be set to take an image with an exposure time of just 1/500 of a second. Astronauts have made sharp images of Earth at night available to scientists. Recently, Don Pettit assembled a sequence of several of the most striking images of city lights at night into an animated “world tour.” This video (see below), produced entirely by Pettit, takes you on a quick trip comparing cities from different regions, all viewed from the International Space Station. When we look up into the nighttime sky, the stars can be beautiful an intoxicating. Browse by: Source ... Earth at Night; Earth from Afar; MODIS Image of the Day; MODIS Rapid Response; National Parks; Rapid Response Gallery; Sea Level Rise ; Show All; Image Size Large Medium Small View All Sizes. Related Stories . Earth is a planet—a rounded world with oceans, continents, and an atmosphere. Image ISS016-E-27586 was taken on February 5, 2008. Now the public can help scientists put those images to better use. Image ISS016-E-16189 was taken on December 11, 2007, with an 85 mm lens. International Space Station Expedition 6. effect of urbanization on Earth’s ecosystems. Heads Up is your one-stop destination for the coolest news from around the globe. Image ISS006-E-44299 was taken on April 5, 2003. Full 360° animated rotation in high definition resolution (1920x1080 1080p MOV 49.3 MB), Full 360° animated rotation in high definition resolution (1920x1080 1080p MOV 48.7 MB), Earth at Night, the Americas The “Vegas Strip” of casinos and hotels—reputed to be the brightest spot on Earth—stands out in the center of this image due to both its brightness and its diversity of light colors. In fact, the Earth is never really dark; it twinkles with lights from humans and nature. Although the area of El Paso, with an estimated population of slightly more than 600,000 is roughly on the order of the area of built-up Ciudad Juaréz, the density of settlement evidenced by the distribution of lights, is much less. Newer developments along the shore of Tokyo Bay are characterized by orange sodium vapor lamps, while the majority of the urban area has light green mercury vapor lamps. Image ISS016-E-27034 was taken on February 1, 2008, using a 28 mm lens. Earth is becoming an urban planet. Individual city footprints will coalesce into ever larger bright blobs. Earth's city lights are clearly visible from space. With the Earth’s surface in darkness, night images of cities require much longer exposure times. According to NASA’s new images, out planet is equally gorgeous at night. Lens artifacts have been removed. By day, cities viewed from space can blend into the countryside, or appear as gray smudges, depending on the style of development and size of the urban area. Since then, a few other crew members have been able to successfully master night photography techniques. Text and captions by Cynthia A. Evans and William L. Stefanov, NASA-JSC. Orange sodium vapor lights illuminate the port facilities of Long Beach, California, supporting the round-the-clock operations of one of the world’s busiest commercial cargo ports. Don Pettit built and installed a “barn-door tracker” to enable him to take nighttime photographs from the International Space Station. See Who Won The Star Wars Bracket! Chicago, Illinois, is home to roughly three million people, but the wider metropolitan area includes nearly 10 million. Like many Japanese cities, the night lights of Tokyo, Japan, have a blue-green glow that comes from mercury vapor lighting. The camera is mounted on a hinged platform that can be moved very slowly and precisely (by turning a knob). Cities from different regions of the Earth are also identified by differences in their nighttime lights. Download this video in high-resolution (126 MB MPEG), web-resolution (39 MB QuickTime) or view the script. View Large Image (4960x4000 PNG 13.8 MB). The increased detail of city lights available from astronaut photography can help refine urban boundaries defined from satellite data. It looks like the Grid from Tron Uprising. But taking pictures in the dark is difficult at best, made even more difficult by the fact that the International Space Station moves more than 7 kilometers per second (15,659 miles per hour) relative to Earth’s surface. Satellite images of Earth at night have been a curiosity for the public and a tool of fundamental research for at least 25 years. Gateway to Astronaut Photography of Earth. Gateway to Astronaut Photography of Earth, International Space Station Expedition 6 Crew, International Space Station Expedition 16, The Art of Science: Astronaut Photography from the International Space Station, NASA Goddard Space Atmosphere © 2020, Boy Scouts of America. The careful coordination keeps the targeted city in the same position in the camera’s field of view during the long exposure, even though both the station and Earth’s surface are moving. The major Denver street patterns are rectilinear, aligned north-south and east-west. Your email address will not be published. Atmosphere Read the Winning Essays From BL’s 2019 Reading Contest, Influential African American Women in History, Blast off to Space Camp for an Astronomical Adventure, 10 Fast Facts About the Apollo 11 Moon Landing. Looking east from a location southwest of Ireland, an astronaut took this nighttime panorama of population centers in Ireland and the United Kingdom. Remote Sensing. Next. Astronauts circling the Earth have the wonderful vantage point of observing the nighttime Earth from 350-400 kilometers above the surface, taking in whole regions at once. Pettit’s tracker and nighttime photography techniques produced hundreds of images of cities from around the world that had estimated resolutions (level of detail) of about 60 meters. The cities of Jiddah and Mecca, Saudi Arabia, are connected by a well-lit pilgrim road. The International Space Station Program supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. That “Night Lights” map, widely distributed on the Internet, helped many people visualize the world’s distribution of people and cities. Remote Sensing, Atmosphere Image ISS016-E-27168 was taken on February 4, 2008, using the 400 mm lens. By day (top), the cement-colored urban center of the city blends almost imperceptibly into the gray-green colors of suburbs and then farmland. Remote Sensing, Black Marble 2017: Night Light Maps Open Up New Applications, Black Marble 2012: Out of the Blue and Into the Black, 2017: Night Light Maps Open Up New Applications, NASA Goddard Space

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