Bad Astronomy , Discover MagazineMyths and misconceptions. Includes an introduction, brief biography, and discussion board.

Astronomy - Wikipedia, the free encyclopediaAstronomy (from the Greek words astro() = star and nomos() = law) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies .

Globular Clusters. Credit: NASA, ESA, and E. Peng Globular clusters are gravitationally bound, dense concentrations of stars. There can be hundreds of thousands of stars in a cluster, and they are so close together that it's hard to distinguish globular clusters outside of our galaxy from.