The universe has many different components. Which list places for components of the universe in the most likely order from smallest to largest?

1.Planets, stars, galaxies, nebulae
2.Planets, stars, nebulae, galaxies
3.Nebulae, stars, planets, galaxies
4.Galaxies, stars, planets, nebulae

The correct answer is:

3. Nebulae, stars, planets, galaxies