Build Your Own Planetarium

As part of our ongoing efforts to build a small classroom planetarium at our school, we have opted not to go with a package deal from a single vendor and instead assemble components from different vendors.

Astronomy on the World Wide Web

As regular readers of this column are aware, I am an astronomy teacher. I teach both high-school and college astronomy for teachers (online) and am involved in several organizations and astronomy programs. I maintain a collection of links at, which lists dozens of links sorted by category.