Lina is late to science class and misses the very beginning of notes for the day. these are the notes that lina did copy down:

–found within galaxies
–have at least 1 star at the center
–have objects orbiting the star
–planets
–moons
–asteroids, comets, meteoroids, dwarf planets

lina later copied the title of the notes from a friend. what title did lina most likely copy?

the universe

galaxies

solar systems

milky way