The International Astronomical Union (IAU) defined a dwarf planet in 2006 as a celestial body that orbits the Sun, is round in shape, but has not cleared its orbital neighborhood of objects of ...

These 80 space trivia questions are great to play with friends, challenge your family with or play by yourself. See how much ...

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 ...

Free to print My Little Book of Planets—a fun, free printable space mini book for kids to color, trace, and learn about planets, space vocabulary, and more! Looking for a simple and fun way to teach ...

Have you ever looked up on a clear night at the stars and noticed that some of them seemed to twinkle or dance? This twinkling is due to the Earth’s atmosphere. When light reaches Earth from a star, ...

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 ...

Earth is quite special among its rocky terrestrial friends: Mercury, Venus and Mars. It is the biggest and heaviest of this group. If you think about it, Earth is quite big – about 12,700 kilometres ...

Get a look at the Roller Gameplay Overview Trailer for Planet of Lana 2: Children of the Leaf, a sequel to the hit action puzzle platformer developed by Wishfully. Players can get the rundown straight ...

Midland Symphony Orchestra's Saturday performance of "The Planets: An HD Odyssey," accompanied by spectacular photos of space from rovers and satellites, has attracted children as well as adults, with ...

Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs. Whether we like it or not, smartphones and tablets are an ...