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Things that 'stay' in space are in orbit round something. This means that they are actually falling!

For instance if you throw a ball up it will fall back down. Now throw it up and away from you, it will go up and then come down but its path is a curve. The harder/faster you throw it the longer that curve.

If it were possible to remove the air from around Earth (which slows things down) and you could throw something fast enough, then the curve of its path would match the curve of the earth, when this happens the object you throw will orbit the Earth - it will stay up!

On Earth (in its atmosphere) you can never get something into orbit because the air slows the thing you throw down, which is why you have to launch the object up outside the atmosphere (into space) to get it to orbit. The launch rocket first goes UP then tilts over to accelerate the space ship to go round the Earth fast enough for it to stay in space.

The space ship stays in space BY FALLING but CONTINUOUSLY MISSING the earth as to falls due to its forward momentum.

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12y ago

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