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, ...

Wonder of wonders, this is the last Weekly Wonder as we all shepherd our kids into this unusual school year. Here are a few fun diversions to ease stress — or, for younger kids, fill the time. The ...

Can I run on the rings of planets? Asks Iola from New York. If you've ever looked out the window of a moving car and imagined yourself running along the rooftops that fly by, you might have had the ...