Digital Universe Atlas Guides
Brian Abbott of the American Museum of Natural History created a series of guides to explain the Digital Universe Atlas, which includes OpenSpace. The guide will take you though the datasets of the Digital Universe in a logical progression, and with navigation instructions and cues for turning data sets on and off.
The Grand Tour is designed to be an overview of the entire universe and is modeled after the tours in the American Museum of Natural History Hayden Planetarium. Its aim is to give one a sense of the overall landscape, from Earth to the farthest reaches of the observable universe.