Fact 1: Gravity pulls objects towards planets.

Fact 2: By the simplest definition, a planet is a large object that orbits a star.

Given the two facts above, answer the question "What pulls objects towards large objects that orbit stars?" with the following options: 
- planets
 - wind
 - sun's heat
 - dust
 - gravity
 - asteroids
 - speed
 - forces


 

     gravity    