If you're planning a vacation in Italy you may be wondering what to eat. These articles will help you learn about the Italian food you'll find in Italy. Note that in Italy, food varies by region so be sure to explore the regional specialties where ever you go.
A satellite in low orbit typically about 800 km from the Earth is exposed to an immense gravitational pull and has to move at considerable speed in order to generate a corresponding centrifugal force. There is a direct connection between the distance from the Earth and the orbital velocity of the satellite. At a distance of 36,000 km, the orbiting time is 24 hours, corresponding to the Earth's rotation time. At this distance, a satellite above the Equator will be stationary in relation to the Earth.
The actual satellite orbit that is chosen will depend on factors including its function, and the area it is to serve. In some instances the satellite orbit may be as low as 100 miles (160 km) for a Low Earth Orbit LEO, whereas others may be over 22 000 miles (36000 km) high as in the case of a GEostationary Orbit GEO.The satellite may even have an elliptical rather than a circular orbit. This is generally taken to be 3960 miles or 6370 km. 2  Orbit velocity: For a circular orbit it is always the same. 3  However in the case of an elliptical one this is not the case as the speed changes dependent upon the position in the orbit.