Mystery #4Tier 2-3spinning / motion
How do cats twist to land on their feet?
If a cat slips and tumbles upside-down, it can somehow flip itself over in mid-air and land neatly on its feet, even though there's nothing up there to push against. How does it turn with nothing to push on?

Your guess
What's your hunch about how a falling cat flips over with nothing to push against?
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