Match the words in the left-hand column to the appropriate blank in the sentences in the right-hand column. use each word only once.
1. Our entire solar system orbits around the center of the____about once every 230million years.
2. The Milky Way and Andromeda galaxies are among a few dozen galaxies that make up our_____.
3. The Sun appears to rise and set in our sky because Earth____once each day.
4. You are one year older each time Earth____about the Sun.
5. On average, galaxies are getting farther apart with time, which is why we say our____is expanding.
6. Our____is moving toward the star Vega at about 70,000 km/hr.
a. Universe
b. Rotates
c. Solar system
d. Milky Way Glaxy
e. Orbits
f. Local group
