
How do planets get their moons?
Daniel and Kelly’s Extraordinary Universe
00:00
The Rosh Limit for the Earth
The Rosh limit for the Earth is around 10,000 kilometers. The moon is like 385,000 kilometers away. So it's well past the Rosh limit. But maybe if you're far out and up beyond this limit, then you don't see this difference in pull from the Earth between one and the other. You'll still always feel that difference, right? And like the moon does feel that difference. That's why we talked about earlier, the moon is a football. It is being pulled by the Earth's tidal forces. But it's far enough away that those tidal forces are not strong enough to tear it apart.
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