Planets in example sentence
Together, this helps us understand whether these planets are small and rocky, like the terrestrial planets in our own Solar System, and also how much light they receive from their parent sun.
More example sentences with word planets
And what starts happening is that, around young suns, young stars, all these elements combine, they swirl around, the energy of the star stirs them around, they form particles, they form snowflakes, they form little dust motes, they form rocks, they form asteroids, and eventually, they form planets and moons. 
