The type of man-made earth satellite

Around another celestial object larger satellites. An artificial satellite is an object or vehicle intended orbit the Earth, the Moon or other celestial bodies. 57 years from October 4 humans have the potential to satellite into orbit around the Earth. Russia was the first artificial Earth satellite with a small satellite orbiting the earth for a couple of month and spread buzz for 21 days.

The United States launched its first satellite on January 31, 1958. The satellite was named Explorer 1, through the data back to Earth Explorer I, scientists found that the Van Allen radiation belts, the regional space around the Earth, Jupiter and Saturn, with high energy protons and electrons.

Satellites did not exist 50 years ago. As more than 4,800 man-made earth satellite satellite has been launched by the government and private companies around the world. Satellite for satellite TV, of course, there are many uses of satellites.

Types of satellite

The moon is a satellite to the Earth is a satellite of the sun. The first one is a moon, the second planet. Man-made (artificial) objects in orbit, always known as the satellite, either in Earth orbit, the moon, sun or other celestial bodies.

We use the different uses of satellites, all satellites can be placed in the following categories:

Communications satellite

Distribution of television and audio signals, via satellite phone connection is through communication satellites. Usually these types of communications satellites in geostationary orbit. U.S. Department of Defense in 1964 launched the first satellite was placed in geostationary orbit. The satellite was named Syncom 3.

Today, the geostationary satellites are used to provide voice, audio and video communications, such as through satellite dish satellite TV network.

Satellite Navigation

These satellites are a great help transport companies, particularly transport the water in the air. U.S. GPS satellites in low Earth orbit (LEO), and can determine the location accuracy of 1 cm (0.4 inches). However, this is a very accurate positioning can only be used for military purposes. For commercial use of precision is not accurate.

Satellite navigation can also be used to measure the distance, such as between buildings.

Meteorological satellite

The task of Earth observation satellites, and in particular what happens in the atmosphere. Different types of cameras, such as infrared cameras normally used to observe whether the same part of the Earth from geostationary orbit, polar orbit, or closer, to get more detailed pictures. Pay more attention to these low-orbit meteorological satellites studying the weather than the current atmosphere of self.

Military satellites

Very similar to the meteorological satellites, military satellites can also be used for observing the Earth. Generally have higher resolution cameras, but the normal communications equipment, and they use encryption. Sometimes, these types of satellites have very different types of track. For example, a very elliptical orbit satellites to bring away from the Earth, Moon and Earth closer, it quickly into the atmosphere, to get as close as possible to the surface without falling back to Earth.

Perhaps there are more tactical, but for obvious reasons, these are unknown.

Scientific satellite

Earth observation is also very good for research purposes may be satellite. Map production and low polar orbit satellites instance, but also measure the exact shape of the earth, geological research can greatly benefit from scientific satellites.

But science is not only used for Earth observation satellites. The study of space benefits from scientific satellites. Such as the Hubble satellite it is actually a huge telescope in Earth orbit. Hubble telescope does not "see" it in the atmosphere can produce a more clear and detailed images than Earth's telescopes.

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