Unit 3 Test

Match it! Select the correct answer from the pull down...Good luck!

a light year measures

In the center of every Galaxy, there is theoritcally a/an

Our sun will not become a black hole because it is

The Sun and Siruis have the same absolute magnitude, but the Sun appears much brighter because it is

By using a spectroscope as astronomer can

Andromeda serves as a model for our galaxy because

Which object forms by the contraction of a large sphere of gases causing the nuclear fusion of lighter elements into heavier elements

The first step in the life cycle of a star is