Crossword

123456
Across
  1. 5. He discovered that prism can be used to split white light into it's components.
  2. 6. First person to see the Rings of Saturn and the Moons of Jupiter with his telescope.
Down
  1. 1. A kind of lens used to magnify objects.
  2. 2. Joseph Fraunhofer invented and used it to discover absorption lines of the stars.
  3. 3. We see phases of this because of reflection from our nearest star.
  4. 4. - This is why the sky is blue