Why Are Satellites Important?

The satellites send television signals directly to homes, They send the signals from a central station that generates programming to smaller stations that send the signals locally via the cables or the airwaves, The  news broadcasts are  sent from the field to the studio via the satellite.

The satellites provide in the flight phone communications on the airplanes, They are the main conduit of voice communication for the rural areas and the areas where the phone lines are damaged after a disaster, And they provide the primary timing source for the cell phones and the pagers.

The communications satellites have the ability to rapidly communicate between a number of widely dispersed locations, They help the big manufacturing companies and the department stores to perform inventory management, They provide the instant credit card authorization and automated teller banking services to even small towns, They pay at the pump gas at the freeway gas stations, and  video conferencing for the international corporations.

The astronomy satellites are the new technology that are mounted on earth orbiting satellites or on the deep space probes, and they can give us an unobstructed view with out the earth’s atmosphere interfering, They carry the detectors to record the electromagnetic radiation at wavelengths shorter than visible light.

The satellite-based navigation systems like Navstar Global Positioning Systems enable anyone with a handheld receiver to determine his location to within a few meters,They are known colloquially as GPS.

GPS locators are increasingly included in the car direction services, GPS based systems are used by the civilians and the military for navigation on land , the sea, and the air, and they are crucial in the situations like a ship making a difficult course in a harbor in the bad weather or the troops lost in unknown regions.

Satellites orbit the earth. Through electronic eyes from hundreds of miles overhead, the satellites lead prospectors to mineral deposits invisible on earth’s surface.

There are the surveillance or spy satellites, There are four kinds of major satellites (White 100) which is the most commonly used, The reconnaissance use cameras to take the pictures of a particular place from up above, and they also have a radar and infrared detectors, so, they can detect the things in the dark or the things that are covered by something or camouflage.

Relaying communications at the speed of light, they shrink the planet until its most distant people are only a split second apart.

There are the surveillance or spy satellites, There are four kinds of major satellites (White 100) which is the most commonly used, The reconnaissance use cameras to take the pictures of a particular place from up above, and they also have a radar and infrared detectors, so, they can detect the things in the dark or the things that are covered by something or camouflage.

They beam world weather to our living room TV and guide ships through storms. Swooping low over areas of possible hostility, spies in the sky maintain surveillance that helps keep peace in a volatile world.

The reconnaissance satellites are used to spy on other countries, They provide intelligence information on the military activities of foreign countries, They can detect the missile launches or the nuclear explosions in space.

How many objects, exactly, are orbiting out there? Today’s count is 4,914. The satellites begin with a launch, which in the U.S. takes place at Cape Canaveral in Florida, NASA’s Wallops Flight Center in Virginia, or, for polar orbiters, Vandenberg Air Force Base in California. A few simply vanish into the immensity of space.

The reconnaissance satellites can pick up and record the radio and radar transmissions while passing over a country and they can be used as an orbital weapon by placing the warheads on a low orbit satellite to be launched at a ground target.

When a satellite emerges from the rocket’s protective shroud, radioelement regularly reports on its health to round-the-clock crews of ground controllers.

The ocean surveillance satellites are used to search for the ships or the submarines, They can spot the nuclear vessels, and new advancements may allow them to scan the depths of the ocean, Early warning and Elint satellites are primarily used by the armed forces, These basically protect the countries from the sneak attacks, and they can be used to detect if other countries are building or storing the nuclear warheads.

Elint is the basic spy satellite that picks up the radio transmissions, and the maps location of countries defense bases, It is the most important military satellite because it does not let another country to put together an attack without another country knowing.

They watch over the temperatures and voltages of the craft’s electronic nervous system and other vital ‘organs’, always critical with machines whose sunward side may be 300 degrees hotter than the shaded part.

The satellites provide the meteorologists with the ability to see the weather on a global scale, They allow them to follow the effects of phenomena like the volcanic eruptions and the burning gas and the oil fields to the development of large systems like the hurricanes.

Once a satellite achieves orbit-that delicate condition in which the pull of earth’s gravity is matched by the outward fling of the crafts speed-subtle pressures make it go astray Solar flares make the satellite go out of orbit.

Wisps of outer atmosphere drag its speed. Like strands of spider web, gravity fields of the earth, moon, and sun tug at the orbiting space farer.

The satellites are used in the field of oceanography, Now the marine scientists and the marine biologist can detect everything that goes on in the ocean, They use the satellites to detect the oceans affect on environment, they can analyze the wave patterns.

Even the sunshine’s soft caress exerts a gentle nudge. Should a satellite begin to wander, ground crews fire small fuel jets that steer it back on course.

They can monitor the marine surface life, they can analyze the ocean tendencies and the currents, and they can get a complete synoptic view of the ocean, These things help them tell you what the water will be like, and help them find out about the ocean life.

This is done sparingly, for exhaustion of these gases ends a craft’s useful career. Under such stresses, many satellites last 2 years.