star, galaxy, solar system, universe star, solar system, galaxy, universe star, solar system, universe, galaxy star, universe, solar system, galaxy
Which of the following correctly lists the structures in space from smallest to largest?

Options:
- star, galaxy, solar system, universe
- star, solar system, galaxy, universe
- star, solar system, universe, galaxy
- star, universe, solar system, galaxy

star, solar system, galaxy, universe