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What are the kinds of artificial satellites that orbit our planet today?
There are many kinds of artificial satelliets orbit our earth they are used for many purposes for communication, GPS(global Positioning system). for television etc.
How many satellites orbit in today?
There may be as many as 25,000 artificial satellites orbiting Earth, although only around 8,300 are on record and less than 5000 are active. Our planet has only one natural satellite, the Moon.
What is a artifical satellite?
An artificial satellite is a manufactured object that continuously orbits Earth or some other body in space. Most artificial satellites orbit Earth. People use them to study the universe, help forecast the weather, transfer telephone calls over the oceans, assist in the navigation of ships and aircraft, monitor crops and other resources, and support military activities. Artificial satellites also have orbited the moon, the sun, asteroids, and the planets Venus, Mars, and Jupiter. Such satellites mainly gather information about the bodies they orbit. Piloted spacecraft in orbit, such as space capsules, space shuttle orbiters, and space stations, are also considered artificial satellites. So, too, are orbiting pieces of "space junk," such as burned-out rocket boosters and empty fuel tanks that have not fallen to Earth. But this article does not deal with these kinds of artificial satellites. ArtifAn artificial satellite is a manufactured object that continuously orbits Earth or some other body in space. Most artificial satellites orbit Earth. People use them to study the universe, help forecast the weather, transfer telephone calls over the oceans, assist in the navigation of ships and aircraft, monitor crops and other resources, and support military activities. Artificial satellites also have orbited the moon, the sun, asteroids, and the planets Venus, Mars, and Jupiter. Such satellites mainly gather information about the bodies they orbit. Piloted spacecraft in orbit, such as space capsules, space shuttle orbiters, and space stations, are also considered artificial satellites. So, too, are orbiting pieces of "space junk," such as burned-out rocket boosters and empty fuel tanks that have not fallen to Earth. But this article does not deal with these kinds of artificial satellites. Artificial satellites differ from natural satellites, natural objects that orbit a planet. Earth's moon is a natural satellite. The Soviet Union launched the first artificial satellite, Sputnik 1, in 1957. Since then, the United States and about 40 other countries have developed, launched, and operated satellites. Today, about 3,000 useful satellites and 6,000 pieces of space junk are orbiting Earth. icial satellites differ from natural satellites, natural objects that orbit a planet. Earth's moon is a natural satellite. The Soviet Union launched the first artificial satellite, Sputnik 1, in 1957. Since then, the United States and about 40 other countries have developed, launched, and operated satellites. Today, about 3,000 useful satellites and 6,000 pieces of space junk are orbiting Earth.
Why are satellites important to Earth?
Perhaps one of the most important and controversial uses of satellites today is that of monitoring the Earth's environment. Many satellites study features on the ground, the behavior of the oceans, or the characteristics of the atmosphere. Satellites that observe the Earth to collect scientific data are usually referred to as "Earth observation satellites." Sometimes the interpretation of their data has been controversial because the interpretation is difficult and people have used the data to call for substantial changes in human behavior.
Name some artificial satellites which are used for different purpose?
The first man-made satellite was Sputnik, launched into orbit in 1957 by the Soviet Union. The first American satellite was Explorer, launched the following year. The oldest satellite still in orbit is Vanguard, launched in 1958 by the US. There are now thousands of satellites currently in orbit, including communications satellites, GPS satellites, and the International Space Station. if you would like to see a real-time 3-D plot of satellites now in orbit, check out the JTRACK 3D web site from NASA.
How do satellites and computers work together to produce images of earth?
I have the same question in the textbook the answer is that satellites use sensors to detect changes in the wavelength of light that is reflected from earth surface. They send this information to computers on Earth, which process into images.AdditionallyEarly satellite communication used radio-transmitters to transfer imagery and data to earth ground stations. Some fixed satellites today use microwave radio relay technology to communicate with the ground which is complementary to that of communication cables.Some of the commercial satellites that capture imagery of the Earth include GeoEye and DigitalGlobe, which provide the imagery used by Google Maps, Google Earth, and others.
How many satellites have gone to earth?
France is a part of the European Space Agency and participates in launches by this agency along with other member nations. The French government has launched 4 reconnaissance satellites: Hélios 1B, Helios 2A, Cerise, and Clementine
The development of communication from world war 2 till today?
Communication since WW2 has been enhanced by satellites, optical fibre cables, the Internet, WWW software and cheap computers.
How is satellite sent into space?
All satellites today get into orbit by riding on a rocket or by riding in the cargo bay of the Space Shuttle. Several countries and businesses have rocket launch capabilities, and satellites as large as several tons make it safely into orbit on a regular basis. For most satellite launches, the scheduled launch rocket is aimed straight up at first. This gets the rocket through the thickest part of the atmosphere most quickly and best minimizes fuel consumption.
How have satellite changed over time?
More technology has been invented and improved. With the satellites today, they are very high-tech. From the Sputnik to the spy and communication satellites you can see the difference. Basically, the technology has improved and more high-tech equipment also.
Why was the moon the largest in history a couple of days ago Why not today or tomorrow?
because the moon is in an eliptical orbit and the distance from earth changes as it moves through its orbit. Right now it is as close to the earth as it has been in the last 18 years. The day before yesterday was when it's orbit started to move away from earth again.
Where do astronauts go today?
In recent years astronauts have gone to the International Space Station, which is in a low orbit around Earth.
