Scientific Guru Shahid

 Hello Dear viewers Lets get start todays Article We live our lives knowing that many satellites orbitour planet every day, and that they are helping us in several ways. You might be surprised to know that there are almost 4900 satellites orbiting the Earth. The most obvious questions that come to mind are, why are these satellites in totally different orbits? How does the satellite carryout all of its functions? And what are the components inside them, which help them to accomplish all of their allotted tasks? Let's explore the answers toall these questions in detail. It's a well known fact thata satellite stays in orbit because of the balance between gravitational pull and centrifugal force. The angular velocity of the satellite is decided by the force balance equation that balances the gravitational and centrifugal forces. When the satellite is deployed, it is given sufficient speed to balance these two forces. A satellite near to Earth requires more speed to resist the grav...

 The Sun … the Moon … the planets… the stars… These natural phenomena have nurtured, guided and inspired life on Earth through out the ages. Yet it wasn't until the beginning of the 20th century, when aerial technology gave birth to the airplane that humans acquired the technical capability to literally reach for the stars. Today, airplanes take us to altitudes of 30,000 feet, allowing us to fly above the clouds at nearly 600 miles per hour. Half way through the 20th century, we invented the technology to go even farther and the satellite era had begun.  The first artificial satellites were launched to low Earth orbit, an area that extends to about 1,200 miles above Earth.The satellite era was destined to show the world that the sky could provide much more than intercontinental transportation and NASA was created.Today in the 21st century, over a thousand operating satellite's orbit planet Earth. They serve us daily with weather prediction, television programming, ...