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, ...

Our readers could probably recite a dozen reasons they put up with freezing air, fogged lenses, expensive accessories, and time-consuming mount collimation in order to experience hands-on astronomy.

Now in its fourth year, the free Fly-Into Summer at the Aerospace Center for Excellence takes flight from 10 a.m. to 2 p.m. Saturday on the Sun ‘n Fun campus of aerospace and astronomy activities.

This article originally appeared in the May, 2010 issue of Astronomy. Many observers consider the Sun the ultimate celestial villain because it robs them of valuable telescope time. But look on the ...