1. Investigation 2 Review Hint: Pay special attention to the underlined parts!

2.  There was a star that was very close to Earth. Its name was … THE SUN

3. A. Piece of glowing rock B. A ball of burning gases that give off light and heat. C. A chunk of fiery metal D. Lots of brilliant flashlights

4. BB

5. A. A group of planets with rings B. A group of golden retrievers C. A group of stars in a pattern that has a name. D. A group of asteroids

6. CC

11.  Because Earth orbits the Sun. Earth’s dark side faces different directions at different seasons.

12.  An astronomer is a scientist who studies natural objects and events beyond Earth. Astronomers study objects as close as Earth’s Moon and as far away as the edge of the universe.

13.  BBILLIONS!!!!!!!!!!!!!!!!!!!!!

14.  You have completed the star tour!