Screenshots of the new Solar System app attached – will publish to the Play Store soon. Source code, wiki and details of updates on the GitHub page.
Yes, published an app to the Google Play store. Take a look here: Google Play Store – Basic Physics Engine This is a tidied up version of the physics engine v1 (2D, 2 balls). Version 2 is done (spawn balls and different shapes, sizes and mass/forces handled by classes) but