2. To shine light on an object and make it visible

3. a moon phase that looks like less than half a circle from Earth

4. The shape of the illuminated part of the moon as it appears from Earth

a moon phases in which the moon is not visible from Earth

6. a rocky sphere that travels around a planet

7. a moon phase that looks like half circle from the Earth

8. the border between light and dark on the Moon

9. something we observe to be similar over and over again

10. a moon phase that looks like more than half a circle from Earth

11. the star that is the main source of light at the center of our solar system

12. a moon phase that looks like a full circle from Earth

13. when the Moon is completely dark

14. an object, diagram or computer program that helps us understand something by making it simpler or easier to see

15. the almost circular path that a smaller object travels, around a larger object