Planets in example sentence
We don't know what the atmospheres of these planets are like because the planets are so small and dim compared to their stars and so far away from us.
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. 
