PPT Slide

Preliminary Activities

1. Use the URL’s provided at the end of this lesson. Who were Tycho Brahe and Johannes Kepler? What did they contribute to modern astronomy and space exploration?

2. Write down Kepler’s three laws of planetary motion. Why are these laws significant today?

3. What role did Mars play in the discovery of Kepler’s law of planetary orbits?

4. Why is Mars significant today?

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