Question: 1 list keplers laws of planetary motion and briefly explain...
1, List Kepler's Laws of Planetary Motion and briefly explain what each means.
2, In a paragraph, describe at least two of the telescopic observations made by Galileo which supported the Sun-centric Copernican model of the Solar System.
3, What is retrograde motion of planets and how does the Copernican model of the solar system explain this apparent motion? Write a paragraph.
4, What is parallax, and why did the apparent absence of stellar parallax lead the Greeks to believe that the Earth must be stationary? Write a parargraph.
5, Write a paragraph describing the two ‘main powers’ of telescopes. Explain why it is useful for astronomers to build bigger and bigger telescopes.
6, What are emission and absorption line spectra? Write a paragraph explaining what they are and why they are important to astronomy.
7, Write a paragraph explaining why astronomers sometimes need to put telescopes in space in order to do their science.