The fascinating objects!!

In simple words a satellite can be defined as an object which revolves around the earth in a circular orbit. there are different kinds of satellites like geo-stationary satellites, polar satellites, low earth orbiting satellites, medium earth orbiting satellites ,etc. These amazing man-made objects find applications in remote sensing, drought assessment, estimation of crop fields, detection of fishing zones, mapping and surveying, weather monitoring and most importantly communication. The launching of satellites is a very complicated process. While the low earth orbiting satellites can be launched directly, the geo-stationary satellites cannot, because of the incredible amount of fuel they would consume, so intermediate transfer orbits called the hoffman orbits are needed. there are different stages involved in the launching of a satellite. the multi-stage rocket with the satellite is held by clamps on the launching pad before lift off. The propellant inside the rocket is ignited and when the upward thrust on the rocket builds up, the rocket is removed from the pad with the help of a remote and it shoots up with great velocity. at different points of the flight each of the different stages of the rocket fire up increasing the speed to what is required and falls back to the earth. by this process the satellite is taken to the orbital height and given the required orbital velocity. The invention of satellites has revolutionized the field of science. Thanks to these magnificent man-made devices, life has become so much easier for the people on earth.