Congratulations!This defintion is the correst answer.

Over 4.6 billion years ago our solar system was born
A solar system consists of a star, the Sun, and all the objects orbiting it.
Besides the sun, 8 planets and their 
moons, our Solar System contains billions of other objects and extends far 
beyond the outermost planets
There are 
several hundred thousand asteroids, more than 800 comets, and countless meteroids  revolving around the Sun.If you would like to learn more about the Solar System please click 
HERE and 
HERE After you have finished exploring about the Solar System, click on the rocketship below and try the next question!
