By kylie - 15/11/2010 21:17 - Canada
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Gravity disappears? Do you even know what gravity is? The moon definitely has a gravitational field, which is about 16.7% of that on Earth's surface. That's why you're supposed to weigh less on the moon than on Earth, because 'weight' is a measure of the gravitational pull between two objects. If there wasn't any gravity on the moon, you just wouldn't weigh anything.
Yeah, you're right, if there were no gravity on the moon or in space, satellites wouldn't orbit the Earth, Earth wouldn't orbit the Sun... there would be chaos. So, there's no such thing as 'no gravity', there is gravity in space. Astronauts 'float' while in space because they have the same acceleration as the capsule they're in, there's no acceleration except for the one provided by gravity.
You're probably just a little bigger than him and there's nothing wrong that. He could also be weak.