Discuss the below:
1. Use the modified form of Kepler's third law to calculate Pluto's mass from the orbital data for Charon (average radius = 19,600 kilometers, 6.4 days to complete a trip around the planet). Be sure to convert the orbital period to seconds and the orbital radius to meters before putting those numbers into the formula. (Assume that Charron's mass is negligible compared to Pluto's).
2. How long does it take sunlight to reach Pluto?