Why Are Satellites Important?

The satellites are the best sources of data for the climate change research, They monitor the ocean temperatures and the prevailing currents, The data acquired by the satellite-borne radars were able to show the sea levels have been rising by three mm a year over the last decade.

When death is only a second away, controllers may command the craft to jump into a high orbit, so it will move up away from earth, keeping orbital paths from becoming too cluttered.

Imaging satellites can measure the changing sizes of the glaciers which is difficult to do from the ground due to the remoteness and darkness of the polar regions, The satellites can determine the long term patterns of the rainfall, the vegetation cover, and the emissions of the greenhouse gases.

Others become ensnarled in the gravity web; slowly they are drawn into gravitational shat serve as space graveyards.

Earth observation satellites can monitor the ocean and the wind currents, the extent of the forest fires, the oil spills, and the airborne pollution, This information helps organize the emergency responders and the environmental cleanup.

A satellite for communications would function like a great antenna tower, hundreds or even thousands of miles above the earth, capable of transmitting messages almost instantaneously across die oceans and continents

The satellites can take the search out of search and rescue for the people in the distress in the remote regions, Distress radio beacons directly linked to a search and rescue satellite can lead the rescuers quickly and accurately to the land, the sea, or the air emergency location.

The remote sensing is observing and measuring our environment from a distance, They are put into the space to monitor the resources that are important for humans, They may track the animal migration, They locate the mineral deposits, they watch the agricultural crops for the weather damage.

Soon after the launch of ATWS-6, (a satellite designed to aid people) NASA ground controllers trained its antenna on Appalachia.

satellites can take the photographs and observe the areas all over the globe, they can monitor the areas in which the climate is very harsh, or which are nearly impossible to reach by land.

To allow students to develop a better understanding of the impact of satellite technology, their relevance to our societal needs, and to link the following science lessons to a meaningful real world context.

The satellites can detect the underground water and the mineral sources, They can monitor the transfer of the nutrients and the contaminants from the land into the waterways, and they can measure the land and the water temperatures, the growth of the algae in the seas, and the erosion of the topsoil from the land.

Students will list different ways satellites address societal needs of mankind.

Imaging satellites produce high-resolution data of the entire landmass on earth which are used in the closely guarded military capability, but now anyone with an internet connection can find his house using Google Earth.

Students will use creative writing to describe a typical day with satellite technology.

Students will examine their typical day and rewrite it to describe the same day without satellite technology.

Students will discuss the broad impacts of satellite technology and the various ways our society has both driven and benefited from this development.

A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sun. Likewise, the moon is a satellite because it orbits Earth. Usually, the word "satellite" refers to a machine that is launched into space and moves around Earth or another body in space.

Earth and the moon are examples of natural satellites. Thousands of artificial, or man-made, satellites orbit Earth. Some take pictures of the planet that help meteorologists predict weather and track hurricanes

Some take pictures of other planets, the sun, black holes, dark matter or faraway galaxies. These pictures help scientists better understand the solar system and universe

Still other satellites are used mainly for communications, such as beaming TV signals and phone calls around the world. A group of more than 20 satellites make up the Global Positioning System, or GPS. If you have a GPS receiver, these satellites can help figure out your exact location.

The bird's-eye view that satellites have allows them to see large areas of Earth at one time. This ability means satellites can collect more data, more quickly, than instruments on the ground.

Satellites also can see into space better than telescopes at Earth's surface. That's because satellites fly above the clouds, dust and molecules in the atmosphere that can block the view from ground level.

TV signals didn't go very far. TV signals only travel in straight lines. So they would quickly trail off into space instead of following Earth's curve. Sometimes mountains or tall buildings would block them. Phone calls to faraway places were also a problem. Setting up telephone wires over long distances or underwater is difficult and costs a lot.

With satellites, TV signals and phone calls are sent upward to a satellite. Then, almost instantly, the satellite can send them back down to different locations on Earth.