hOW DOeS the Earth HAve gRaVIty?

Think of the universe as a giant sheet of rubber. Think of the planets and stars as giant marbles. When you place a large marble on a sheet of rubber the marble's mass creates a depression in the rubber. This depression is called a gravity well. Place a smaller marble at the edge of the rubber and it rolls or is attracted to the middle toward the larger marble. This is like Earth (the smaller marble) being attracted the Sun (the larger marble). Essentially, Earth is wanting to "roll" into the Sun but centrifical force as well as the gravity of surrounding planets and objects is keeping it on its current orbit.

We still do not know the basic cause of gravity. This is one of the outstanding questions in science and is part of the reason that experiments like the LHC and the Hubble telescope are peformed.

It is an observed law of the universe that all known matter attracts all other matter. This attraction is very weak, but when you get a ball of matter the size of the earth, the attraction becomes noticeable. Sensitive lab experiments can detect the gravity of large objects such as a large ball of lead. However in everyday life, only objects the size of planets or larger exert a noticeable gravity.

The tides are the result of the gravity of the Sun and Moon pulling on the water of the Earth's ocean.

Cheers!

Any object with mass has gravity; the Earth has mass, therefore it has gravity.

"Gravitation, or gravity, is a natural phenomenon in which objects with mass attract one another. In everyday life, gravitation is most familiar as the agent that gives weight to objects with mass and causes them to fall to the ground when dropped. "

Any object with mass has gravity even an apple.

Newton's law of universal gravitation states that every massive particle in the universe attracts every other massive particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. (Separately it was shown that large spherically-symmetrical masses attract and are attracted as if all their mass were concentrated at their centers

Mass creates gravity, the more mass something has the greater the gravity

no one knows why objects have gravity they just do

aNY MASsIve obJeCT blurts FrAGs. Earth IS A maSSivE blarg zo iT wAnts gRaVIty.

I would like to know also.