Children ask very interesting questions about the world we live in. Among the most asked questions is, “How old is the Earth?” The answer to this question is not simple. It involves science, space, ...

This is an article from Curious Kids, a series for children. The Conversation is asking kids to send in questions they’d like an expert to answer. All questions are welcome – serious, weird or wacky!

The Earth has been spinning since its birth, four and a half billion years ago. The Earth was made from rubble that was left over when the Sun formed from the collapse of a huge cloud of matter. The ...