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(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Nilakshi Veerabathina, University of Texas at Arlington (THE CONVERSATION) ...

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.

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., ...