Live Earth Satellite

Science and technology have made tremendous advancement. We can forecast the weather and even predict natural calamities. Live Earth Satellite view on the television shows the wind patterns and predicts the weather for the next whole week. It really helps in contingency planning. The images of the earth or other planets and stars, taken by an artificial satellite are known as satellite imagery. These are high resolution photographs and help us in many ways like- agriculture, meteorology, remote sensing, and military affairs, ecological planning, etc. the accurate prediction of weather really helps a lot in agriculture. Farmers who depend largely on nature benefit a lot from this information. Information on weather is also beneficial for people residing in coastal areas. Fishermen can be alerted about high tides and tsunamis well in advance. Recent wars have brought to fore the importance of satellite imagery. It helps in locating the enemy and also attacking with unmanned vehicles.

The meteorological department and space research agencies like NASA have Live Earth Satellite images which are monitored continuously for any unnatural changes. These images are in the form of colored photographs and also in other spectra. Radar imaging helps in making evaluation maps. These images are later on analyzed and evaluated with the help of some sophisticated software packages like ENVI and ERDAS Imagine. U.S. government and its contractors were the first ones to conduct such interpretation. Seismology and oceanography also make use of these images. They provide information about the changes in the sea bed and land formations which can cause earthquakes, volcanoes etc.

It is a very interesting field of study. Great advancements have taken place and a lot of research is still going on. Google earth is a very interesting website which gives the satellite image of any place and helps us in locating our destination. In fact you can zoom in and get to the exact location. GPS systems also use this technology only. Satellite imagery has also contributed a lot towards space research. We can see the images of other planets and get information about them. Whether it is Moon or Mars, we can see three dimensional images. These images have only told us about the presence of water on Moon and adventurous men and women are already thinking of a vacation on Moon! They can even prepare themselves by watching old images of the landing on moon. This has given wings to people's imagination. Time travel also seems a likely possibility.