How do astronauts float?
Zib answers for ages 8–11, then goes 1 step deeper each time a child asks why.

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Zib says
The space station races around Earth at about 28,000 kilometres an hour. Earth's gravity pulls on it the whole time, so it's always falling. But it's zooming sideways so fast that it keeps missing the ground. The astronauts inside are falling right along with it. So nothing presses them to the floor, and they float.
Checked against What is microgravity? (NASA)
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Isn't there no gravity up in space?
Up where the space station flies, Earth's pull is still about nine-tenths as strong as on the ground. In fact, there's a little gravity everywhere in space. Astronauts float because they and everything around them are falling together, so nothing pushes against anything else.
Checked against What is microgravity? (NASA)
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