That's called conservation of angular momentum.

这称为「角动量守恒定律」。

That's called the conservation of angular momentum.

- 这就是所谓的角动量守恒。

This is because of a principle called conservation of angular momentum.

这是因为称为角动量守恒的原理。

It seems to be able to right itself by flipping in the air without pushing off anything first, which would contradict the law of conservation of angular momentum.

它似乎能够通过在空中翻转而不首先推动任何东西来调整自己，这与角动量守恒定律相矛盾。

But the reason it’s moving away also explains why it will never leave us—a principle known as the conservation of angular momentum.

但它离开的原因也解释了为什么它永远不会离开我们——一个被称为角动量守恒的原理。