As we know, moon is the satellite of earth. So does a satellite mean a new moon? In fact, the moon is the only natural satellite of the earth and man has created artificial satellites that orbit the earth just like the moon.

However, while the moon orbits the earth once a month, artificial satellites orbit the earth once in 24 hours or a day. This is because the time it takes to orbit the Earth depends on the distance of the planets from the Earth. If a satellite can be placed at a distance of only 130 miles from the earth, then it can circle the earth once in just 90 minutes. The moon is located at a distance of about 240 thousand miles from the earth. So its orbit is very large and it takes one month to orbit the earth. But artificial satellites are placed about 20,000 miles (36,000 km) from Earth to facilitate their service. As a result, it takes 24 hours to circle the earth once.

A satellite is a powered artificial satellite launched into space by a scientific process. To orbit the Earth, modern satellites or artificial geosatellites are placed in a specific orbit outside the atmosphere by attaching a special type of wireless receiver-transmitter. Satellites are launched into orbit by rockets or space shuttle cargo bays. Initial Guided System or IGS (Initial Guided System-IGS) is used to control the rocket during launch. Hundreds of satellites (artificial satellites) are in operational use today.

Satellites are used for various communication purposes like weather forecasting, television broadcasting, radio communication, Internet communication and Global Positioning System (GPS). Satellites used for communication are called communication satellites. Satellite communications can be used in various areas related to national security, such as carrying out covert missions. Satellites are used for telecommunications, global digital data transmission (text, sound, still, moving images), maintaining communication with spaceships outside the Earth and ground-to-surface vehicles, etc. Some of the types of satellites available on Earth include weather satellites, communication satellites, navigation satellites, earth-observation satellites, military satellites.