The word “planet” came from the ancient Greek words that mean “wandering star.” That makes sense, because for thousands of years, people have watched planets change position in the night sky — unlike ...

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 ...

Exploring the solar system is the subject of new Broken Arrow author Dana Rowe’s first children’s book. In her book, “Pavo Explores the Solar System,” a green alien travels the Milky Way and learns ...

Add Yahoo as a preferred source to see more of our stories on Google. Surrounded by some of the characters she's created, Nancy Hahn recently launched Planet Pink Club, a mobile game for young ...

Dr Rudi Kuhn does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...