Across
- 3. Discovered the theory of gravity and the three laws of motion.
- 4. It is made up of ice, dust, and rock and orbits the Sun
- 5. Founder of environmental science.
- 7. Discovered pasteurization, vaccines, and founded the science of germ theory.
- 9. ____ planet, Pluto is now considered one of these
- 11. A dark area on the surface of the Sun
- 13. Invented the light bulb, phonograph, and the motion picture.
- 14. Black ____, light cannot escape its gravity
- 15. Came up with the Theory of Relativity and the equation E=mc2.
Down
- 1. Inventor and artist from the Renaissance.
- 2. A person trained to travel into outer space
- 6. Giant spheres of superhot gas
- 8. Built the first commercially successful steamboat.
- 10. gases that surround a planet
- 12. First used the telescope to view the planets and stars.