| There are two different types of satellites, in geostationary and polar orbits. Satellites in geostationary orbit always keep their position over the same spot on the Earth. Satellites in polar orbit circle the Earth and can capture images all around the world. Depending on the image resolution, it will take between a couple of hours to many weeks to cover the entire earth with images. Satellites allow us to |
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circumnavigate the world in the space of 90 minutes to survey oil spill in the sea, deforestation, forest fires, minerals, different types of crops, vegetation, detailed map screening, meteorology, movement of ice crust, sandstorms, erosion, phytoplankton, deserts, flooding, ozone and many other factors that are possible to investigate from high altitudes. This chapter has been made in collaboration with the Swedish National Space Board. |
