2. This scientist's hypothesis stated that light is made up of photons:
Bunsen Newton Einstein

3. Created a system known as sunspot numbers for studying solar activity:
Wolf Langley Galileo

4. This scientist invented the spectroscope:
Abbot Eddington Bunsen

5. Which of the following scientists discovered sunspots?
Einstein Wolf Galileo

6. This English astronomer discovered the mass-luminosity relationship for stars:
Kepler Newton Eddington

7. The scientist Hipparchus was most famous for:
His calculation of the length of the year His trigonometric chords His 3 planetary laws

8. This astronomer played a major role in the development of the heliocentric theory:
Eratosthenes Hipparchus Copernicus

9. The astronomer who formulated three laws of planetary motion was:
Ptolemy Kepler Copernicus

10. The telescope was first used for astronomy by:
Galileo Newton Shapley

11. This English mathematician and scientist formulated the law of universal gravitation:
Abbot Cavendish Newton