Scaled at 1:1 billion, this unique trail (longest on the West Coast, and the only one in Oregon) is a great way to enjoy the outdoors while exploring our solar system.
Start your scale-model journey from the sculpture of the Sun in David Goudy Science Park.
Navigate the solar system from the sun to the outer planets by
following the bike and walking trail on the City of Port Phillip’s
Planet Trek Dane County (PTDC) was first installed in April 2009 as a celebration of the International Year of Astronomy by UW Space Place and partners.
Taking the walk, you experience the relative size of the planets and their distance from the Sun. The scale was chosen so that a leisurely walking pace mimics the speed of light
Take an out-of-this-world visit along the Sagan Planet Walk! This 1,200 meters long (3/4-mile), 1:5 billion, scale model of our solar system was built by the Sciencenter in 1997 as a memorial to Ithaca resident and astronomer Carl Sagan.