Astronomy material here is from the viewpoint of an amateur, mostly interested in the origin and evolution of the cosmos. Hence, many of the photos are not superior quality, they are there to illustrate a point. Superior photos and technical references from outside experts are acknowledged.
Drop down menus give access to a Our Cosmos, a primer on astronomy, and the photo gallery, technical references and an appendix containing useful data and facts on the subject. In Our Cosmos are more extensive topics such as Building the Cosmos, Bodies in Motion and Planets.