Why Was the Shoemaker- Levy 9 Impact So Important to Astronomers

Multiple Choice

Why was the Shoemaker- Levy 9 impact so important to astronomers?

A) It dredged up material that gave us our first direct look at Jupiter's interior composition.
B) It wiped out the dinosaurs.
C) It was the first event in modern history that was brighter than the full moon in the sky.
D) It was the first direct proof that impacts really occur.
E) It confirmed our theory of solar system formation.