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I travel around the world to find out the beauty of the nature. Such a lot miracles may disapear without gravity.

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Gravitational field of the earth does vary from location to location. It is related to latitude and altitude of your position. To be specific, if you move from Antarctic to some area near equator, you malose 1% of your weight.
(image from https://www.quora.com/Are-gravitational-forces-exactly-the-same-all-over-Earth-or-does-it-vary)

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I'm always wondering, since there are gravitational pull between any two objects in the space, how come they are not pulling each together, but instead planets orbiting around sun and moons orbiting around planets? This game helped me get a better understanding.

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Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see what would happen without it!

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Gravity and Earth
Without gravity, we can't live on earth like we do. Even drinking water would be inconenient.

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You are very welcome for my gravity game on Scratch: https://scratch.mit.edu/projects/155830214/

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Why will you fall on the earth after jumping?

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Why will you fall on the earth after jumping?

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As we all know, every object in the universe will take the effect of gravity. Let's assume the whole universe only has one planet, our earth, and one people, you, on the earth. When you jumping, you and the earth will have the same gravity from each other. Then why you feel like falling on the earth?

According to the Newton's second law of motion, F = m * a, where F is the net force applied, m is the mass of the object, and a is the object's acceleration. After you jump, both you and the earth will take the gravity in equal magnitude and opposite direction. So in the equation, F has the same magnitude, but as the mass of the earth is far more than that of you, we could say that the acceleration of the earth is far larger than yours. In fact, the acceleration of the earth approaches 0.

As a result, you will fall on the earth, and the earth will barely move.

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https://spaceplace.nasa.gov/what-is-gravity/en/

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Newton found the law of universal gravitation after he was hit by an apple. The apple fell down from the tree because of gravity.

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Thank goodness for gravity. Without it we'd all float away... And my hair would be a MESS!
(image from https://firstsliveone.wordpress.com/2009/11/30/weightlessness/)

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If there is no gravity, I might reach the ceiling inside the building. Wondering what will happen to the earth then?

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You can't blame gravity for falling in love.