SOLAR SYSTEM

Detailed explanation-1: -The majority of satellites orbiting the Earth do so at altitudes between 160 and 2, 000 kilometers. This orbital regime is called low Earth orbit, or LEO, due to the satellites’ relative closeness to the Earth.

Detailed explanation-2: -The time required for a satellite to orbit (the orbital period) increases with altitude. Only one altitude (36, 000 km)permits satellites to orbit at the same rate at which the Earth rotates, such satellites are called geosynchronous.

Detailed explanation-3: -Satellites provide information about Earth’s clouds, oceans, land and air. They also can observe wildfires, volcanoes and smoke. All this information helps scientists predict weather and climate. It helps farmers know what crops to plant.

Detailed explanation-4: -Atmospheric drag at orbital altitude is caused by frequent collisions of gas molecules with the satellite. It is the major cause of orbital decay for satellites in low Earth orbit. It results in the reduction in the altitude of a satellite’s orbit.