Said the moon to the planet, “I’m strangely attracted to you.” There’s nothing strange about the magnetic pull of one body on another when examined through the eyes of science. If you’ve ever wanted a better understanding of why objects fall toward the ground instead of rising up into the sky or contemplated the way Earth remains in orbit around the sun, this app will help find the answer. Create spherical bodies and establish attractions between them. Build your own solar system with more than 16,000 planets, add rings to planets, create double stars and more. This app has been around for a few years, but it’s remains a fun gravity simulator.