Another new iPhone app for astronomy, and this one, called SpaceWalking combines a 3D scale model of the Solar System with location-based data from GPS satellites to place a virtual scale model of the Solar System in your neighborhood to explore. For more info, check out the Spacewalking website. If you’re quick, follow the @SpaceWalkingApp on Twitter
for a special deal.
Also, I have two of these apps to give away. First two commentors who can answer this question correctly win: How far is Jupiter from the Sun?
Here’s a link to a 3D Solar System.
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