Meet Bernie. Bernie Sanders is a Democratic candidate for President of the United States. In 2006, he was elected to the U.S. Senate after 16 years as Vermontâs sole congressman in the House of Representatives. Bernie is now serving his second term in the U.S. Senate after winning re-election in 2012 with 71 percent of the vote.
Satellite imagery at 30-centimeter resolution provides the clearest, most detailed view of the ground from space. See sample imagery to find out for yourself. If you use commercial satellite imagery to map, monitor or assess situations, materials, or infrastructure, you are probably accustomed to 50-centimeter spatial resolution.
You can also classify satellites based on their height above Earth's surface. Using this scheme, there are three categories [source: Riebeek 1  ]: Low-Earth orbits (LEO) â LEO satellites occupy a region of space from about 111 miles (180 kilometers) to 1,243 miles (2,000 kilometers) above Earth. Satellites moving close to the Earth's surface are ideal for making observations, for military purposes and for collecting weather data. 2  Medium-Earth orbits (MEO) â These satellites park in between the low and high flyers, so from about 1,243 miles (2,000 kilometers) to 22,223 miles (36,000 kilometers).