The ancient Greeks proved over 2,000 years ago that the Earth was round and figured out how big it was by using simple observations of the Sun. But how do people know this today? When you drop ...

Research Fellow, School of Physics and Astronomy, University of Nottingham Lots of us are familiar with pictures of the planet Saturn and its unmistakable ring. In fact, Saturn doesn’t have just one ...

University of Regina provides funding as a member of The Conversation CA-FR. University of Regina provides funding as a member of The Conversation CA. Curious Kids is a series for children of all ages ...

For a very long time, Saturn was thought to be the only planet in our solar system with rings. The rings around Saturn were discovered by an astronomer called Galileo Galilei nearly 400 years ago. He ...