The era which we see around is a total definition of how technology and science have made our life’s more comfortable and entertaining. We use technology in everything we admire to work on, be it our smartphones, vehicles ,cooking and many more. Our life is incomplete without these applications and thus are an important part of our day today activities. But these technologies are not only limited to this planet only. We have been able to accomplish the goal to reach the space with all the research work and various new ideas to develop the required technologies for them. The journey to space started with the launch of a satellite to it and till date it’s no looking back. We have sent a number of satellites to space irrespective of their size, rockets and even human beings. These surely have helped human in many way out. Satellites have been a part of our life for more than 5-6 decades and helped humans depending up on their needs. 

So the first question which comes to the mind of any individual is “What really is a satellite and how is it able to perform different activities”. We have been using satellites in anything we use today. Be it for watching television, weather reports, calling, GPS,Defence and many more. We are surrounded by technologies which do work with the help of these satellites and make our life more and more simple. So these satellites are objects which orbit our earth by remaining in its orbit. These are usually artificial satellites as these are man made, while the moon being our only natural satellite which do orbit our earth. The size of these orbits depends on the type of function they are meant for. These could be as small as mobile in your hand and could be as big as any vehicle or more. 

So “How these satellites work and get power from”. It’s difficult for us to charge these satellites regularly by bringing them back and also very costly. So these use the solar energy as power source for their functioning. Solar panels are usually attached on  the sides of these satellites, which trap the solar radiation and thus generate power. These usually consist of a transmitter in between which transmits the signal which they receive. These can also be controlled by the motors which are used either to change its orientation , if it gets deflected from its orbit or sometimes to power them so as to get away from any space debris coming in the same orbit which could surely harm the satellite. These satellites usually are divided on the basis of the phases or zones they work in. These could be named as:

 

1. LEO or Low Earth orbit. – These satellites orbit our earth at a height ranging from 160-1600 km. 
2. MEO or Medium earth orbit– These orbit earth at an height of 10000km to 20000 km and thus are placed at distant places from earth. These are widely used for navigation and locating places. 
3. HEO or High earth orbit- These stay in orbit of earth to the farthest of points which is 36000 km and are also called geostationary satellites and rotate with the speed of earth and widely used for communication. 

 

“These satellites and technologies related to have more often helped us in many ways,and would be befitting in future also. But the only thing these add up to is the space debris.These are more often remained in space when there time period gets completed and are left to lose out in deep space. But all of this adds up as junk in space and might be harmful in our future trips to space. But usage of these satellites are more than their disadvantages , and thus have made life on earth More comfortable, knowledgeable and also given birth to a lot more complexities with it”.