SOLAR SYSTEM

Detailed explanation-1: -The Earth’s gravitational field extends well into space it does not stop. However, it does weaken as one gets further from the center of the Earth. The Shuttle orbits about 125 mi above the surface, roughly the distance between Jackson and Nashville!

Detailed explanation-2: -The value of standard gravity corresponds to the gravity on Earth at a radius of 6, 375.4 kilometres (3, 961.5 mi).

Detailed explanation-3: -Strictly speaking, the Earth’s gravity will always pull on an object, no matter how distant. Gravity is a force that obeys an ‘inverse square law’. So, for example, put an object twice as far away and it will feel a quarter of the force.

Detailed explanation-4: -Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet’s rotation.

Detailed explanation-5: -There is a gravitational force of attraction between every object in the universe.

Detailed explanation-6: -The gravitational field strength decreases as the separation from the planet increases. As you move away from the surface of the planet this dilution of gravity follows a definite inverse square relationship, where distances are measured from the centre of the Earth (or Moon).

Detailed explanation-7: -In fact, our planet isn’t the only place with gravity. Every object in the universe-stars, planets, moons, even you-has gravity. Gravity is a force of attraction between all objects. How does gravity work?