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Satellites are made of lots of materials.
What are satellites made of. A satellite is an object that moves around a larger object. As of december 2018 usa designations have been assigned to 290 space missions. In addition to these man made threats to artificial satellites meteoroids in space can reach speeds of 42km s faster than a bullet and pose a significant threat to satellites. These so called geostationary satellites he proposed could be used for communications.
Each has to be tested to make sure it does not change in the high vacuum of space and can withstand the temperatures which can be very cold. Satellites in a highly inclined orbit such as a polar orbit take more energy than a satellite that circles the earth over the equator. Many scientists didn t fully embrace clarke s idea until oct. A satellite is a moon planet or machine that orbits a planet or star.
Space agencies keep long lists of materials and components which they have tested for use in space to help the engineers. Artificial satellites are man made satellites sent into space for a variety of different purposes e g. A satellite with a low inclination can use the earth s rotation to help boost it into orbit. Taking pictures of the earth for scientific investigation natural satellites are moons which.
This is a list of satellites and spacecraft which have been given usa designations by the united states air force these designations have been applied to most us military satellites since 1984 and replaced the earlier ops designation. They make us safer provide modern conveniences and broadcast entertainment. They often affect our lives without our realizing it. Approximately 2 000 artificial satellites orbiting earth relay analog and digital signals carrying voice video and data to and from one or.
Here are some of the jobs satellites do. Satellites send television signals directly to homes but they also are the backbone of cable and network tv. Satellites in high earth orbit require the most energy to reach their destination. Satellite communication in telecommunications the use of artificial satellites to provide communication links between various points on earth satellite communications play a vital role in the global telecommunications system.
That s when the soviet union launched sputnik 1 the first man made satellite to orbit earth sputnik was a 23 inch 58 centimeter 184 pound 83 kilogram metal ball.
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