Shapley Found That Globular Clusters Are Only Found in the Galactic

Q38: Why was Herschel's strategy for mapping our

Q39: How does gravity lensing let us find

Q40: List at least one naked-eye observation that

Q41: Population I stars came billions of years

Q42: Describe our location in the Milky Way.

Q44: In structure, our Milky Way is most

Q45: Why were globular clusters so vital to

Q46: It was the distribution of _ that

Q47: In our vicinity, the Galactic disk is

Q48: Some of the invisible matter in our