We know it takes 3651/4 days to make one revolution around the sun. We call that a year. It's a long ways to go, especially when you consider that our orbit is oval-shaped. The speed may astound you.

We examine why the Earth's constant spin goes completely unnoticed by the people living on it. We think about it and then ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. Why can’t we feel the Earth moving? – Dave H., ...