1. Mars orbits the sun every 687 days. Calculate the average distance (the semi-major axis) from the Sun using Kepler's third law. Use C=1.335 x 10⁵ Show your work.

2. Using the average value of C calculated as C = 1.335 10⁵ in the units of d²/AU³, find the orbital period (in days) for Venus, if its semi-major axis is 0.72 AU.

3. Each of the following space programs had a notable achievement. For each space program listed, fill in the items in this table:

Program	Year(s) active	Country	Most important achievement
Sputnik
Mercury
Gemini
Apollo

4. Fill in this table summarizing the potential for life on each on these two moons in the solar system.

Moon	Features that favour life	Features that discourage life	Possible forms and locations of life
Europa
Titan

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Here are the answers 1 Using Keplers third law we can calculate the semimajor axis a of Mars orbit a ... View the full answer