1. What are telescopes used for?

2. What is the magnification of a telescope?

3. The larger the ________, the more light a telescope can gather.

4. What type of telescopes use mirrors to focus the light of the image?

5. What type of telescopes use lenses to magnify the image?

6. What do we call the lens in a telescope that spreads out the light across the retina of your eye?

7. What famous scientist invented the reflecting telescope?

8. What famous scientist first used the telescope for astronomy?

9. What telescope was put into outer space in 1990?

10. Where are most observatories with large telescopes built?