Satellites are manmade objects put into orbit. They often affect our lives without our realizing it: Here are some of the jobs satellites do:
The only thing comparable to the feat in technological terms is the scientific know-how that goes into placing, and keeping, one in orbit around the Earth. Just consider what scientists need to understand in order to make this happen: So really, the question of How Satellites Stay in Orbit, is a multidisciplinary one that involves a great of technical and academic knowledge.
First, to understand how a satellite orbits the Earth, it is important to understand what orbit entails. Johann Kepler was the first to accurately describe the mathematical shape of the orbits of planets.
Whereas the orbits of planets about the Sun and the Moon about the Earth were thought to be perfectly circular, Kepler stumbled onto the concept of elliptical orbits. In order for an object to stay in orbit around the Earth, it must have enough speed to retrace its path. This is as true of a natural satellite as it is of an artificial one.
Next comes an understanding of gravity itself. All objects possess a gravitational field, but it is only in the case of particularly large objects i. However, that is a specific case at the surface of the planet.
Relying on this formula, we are able to see that the velocity required for orbit is equal to the square root of the distance from the object to the center of the Earth times the acceleration due to gravity at that distance. So if we wanted to put a satellite in a circular orbit at km above the surface what scientists would call a Low Earth Orbit LEOit would need a speed of 6.
The greater the altitude, the less velocity is needed to maintain the orbit. So really, a satellites ability to maintain its orbit comes down to a balance between two factors: The higher the orbit, the less velocity is required.
The nearer the orbit, the faster it must move to ensure that it does not fall back to Earth. We have written many articles about satellites for Universe Today.Review Board.
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The first satellite, Sputnik 1, was put into orbit around Earth and was therefore in geocentric orbit. By far this is the most common type of orbit with approximately 1, artificial satellites orbiting the Earth.
Geocentric orbits may be further classified by their altitude, inclination and eccentricity. An equatorial orbit is a non-inclined orbit with respect to Terra's equator (i.e., the orbit has zero inclination to the equator, ° inclination if retrograde).Most civilian satellites use such orbits.
The United States uses Cape Canaveral Air Force Station and the Kennedy Space Center to launch into equatorial orbits..
An ecliptic orbit is a non-inclined orbit with respect to the solar. [/caption] An artificial satellite is a marvel of technology and engineering. The only thing comparable to the feat in technological terms is the scientific know-how that goes into placing, and.
An artificial satellite is a marvel of technology and engineering. The only thing comparable to the feat in technological terms is the scientific know-how that goes into placing, and keeping, one. The Disadvantages of Satellites By Bayard Tarpley; Updated April 23, Man-made satellites are important and impressive pieces of technology, but they do have some down sides.