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