The University of Washington astronomy department is readying a traveling planetarium to take to schools for outreach -- and collaboration -- in Seattle and beyond.

It may look like a carnival bouncy house or an inflatable igloo, but the portable planetarium is in fact an innovative tool for teaching and spreading interest in astronomy.

The circular fabric dome, made by GoDome, is about 10 feet tall and 20 feet across -- big enough to hold a classroom of young astronomers -- and stays upright with the help of a high-powered fan.

It's a fully functional planetarium and then some, revealing the cosmos in multiple wavelengths and frequencies and over time, with three-dimensional simulations of the movement of planets, stars and galaxies, all powered by a laptop computer and Microsoft's freely downloadable Worldwide Telescope software.

The planetarium is the creation of a team of UW students and faculty originally led by post-doctoral researcher John Wisniewski, who has taken a faculty post at the University of Oklahoma. The team continues with doctoral student Phil Rosenfield as principal investigator. Joining him in the work are astronomy lecturer Oliver Fraser, undergraduate Justin Gailey and fellow doctoral student Nell Byler.

Rosenfield said recent department surveys show that while many students bus in to visit the UW planetarium, few are from the Seattle area. So the team decided to bring astronomy to the schools instead of the other way around.

This traveling planetarium will be more interactive than most.

"We are all working on curriculum for the students to create their own shows and use our planetarium like a presentation tool," Rosenfield said. The team is looking to Gailey and future undergraduates to keep the project going when Rosenfield finishes his degree.

Gailey helped develop the planetarium's mirror-based optics and wrote curriculum for its use in a high school setting.

"You essentially make little stops," Gailey said. "You can say, I want to look at this planet and you can pause the tour and talk about it, then move on and it will pan to the next subject."

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Astronomy to go: University of Washington readies new portable planetarium