Across
- 2. Joseph Fraunhofer invented and used it to discover absorption lines of the stars.
- 4. A kind of lens used to magnify objects.
- 5. He discovered that prism can be used to split white light into it's components.
- 6. First person to see the Rings of Saturn and the Moons of Jupiter with his telescope.
Down
- 1. - This is why the sky is blue
- 3. We see phases of this because of reflection from our nearest star.