A star shines because

We see stars as they were in the past because their images have been burned into the universe forever.

The color of a star tells us its

Two stars that orbit around each others mass is called a

Our Sun has about ___ years left.

Our galaxy is called the

Most of the mass in a galaxy emits light.

The universe reuses things created in stars.

The theory that explains how the universe formed is called the

The phase of the moon in which no light is reflected is called the

A galaxy shaped like a ball is called a(n)

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