Universal Gravitation

Answer the following questions. Briefly describe Kepler’s three laws of planetary motion. How did Newton’s laws of motion and law of universal gravitation validate Kepler’s laws? List the parts of the electromagnetic spectrum. What types of telescopes are useful from the Earth’s surface? What can they observe? Explain how light is produced at the atomic level. Distinguish between emission, absorption, and continuous spectra. What can absorption and emission spectra tell us about stars? Why do modern astronomers place telescopes in orbit about the Earth’s atmosphere? What types of objects can be observed from those telescopes that aren’t visible from the Earth’s surface? The use of outside sources is optional, but you must provide citations and references in APA format for any sources you use