Section: Science

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What reason does the author offer as explanation for why planets rotate in the same direction?

That's how God created it.
That's how the Big Bang established it.
The author is not certain.
The author states that it is because the solar system formed out of a nebula – a giant cloud of gas and dust in space — and that planets are rotating in the way the original nebula was rotating.

Explanation

Explained in detail in the next to last paragraph.