Orbit Lab, and room to play on iPad

Orbit Lab is a sandbox where everything pulls on everything else. Place stars, planets and moons with real mass ratios, give them a push, and watch what happens. There are no goals and no score.

It comes with ready-made systems to start from:

• Sun, Earth & Moon: the Moon circles Earth while both circle the Sun.
• Binary Stars: two stars waltz, and a Tatooine world orbits them both.
• Figure-Eight: three equal stars chase each other along one figure-eight.
• Trojans: asteroids riding 60° ahead of and behind Jupiter.
• Jupiter's Moons: Io, Europa, Ganymede and Callisto in their 1:2:4 dance.
• Slingshot: a comet swings round Jupiter and leaves twice as fast.

Orbit Lab is a one-time unlock, or part of the launch bundle.

iPad is fully supported too: every screen is laid out for the bigger display, in portrait or landscape.