SOLAR SYSTEM

Detailed explanation-1: -Ans. A satellite’s orbit is kept stable by balancing two factors: its velocity (the speed required to travel in a straight line) and the gravitational pull of the Earth. To resist the stronger gravitational pull, a satellite orbiting closer to the Earth requires more velocity.

Detailed explanation-2: -An Earth-orbiting satellite’s motion is mostly controlled by Earth’s gravity. As satellites get closer to Earth, the pull of gravity gets stronger, and the satellite moves more quickly.

Detailed explanation-3: -Gravity is a force of attraction between masses. It provides the centripetal force needed to keep a satellite in orbit around a planet, or a planet in orbit around a star such as the Sun.

Detailed explanation-4: -A satellite maintains its orbit by balancing two factors: its velocity (the speed it takes to travel in a straight line) and the gravitational pull that Earth has on it. A satellite orbiting closer to the Earth requires more velocity to resist the stronger gravitational pull.

Detailed explanation-5: -The locations of the satellites are determined using tracking from ground stations. The ground stations use mechanisms such as radar, signal doppler, and laser reflectors to pinpoint the position of a satellite and to maintain an understanding of its orbital elements.

Detailed explanation-6: -Definition: Orbital Speed Equation-Circular Orbit In the special case of a circular orbit, an object’s orbital speed, , is given by the equation = , where is the universal gravitational constant, is the mass of the large object at the center of the orbit, and is the orbital radius.

Detailed explanation-7: -The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit.