Question 21 (2 points) suppose a new planet was found in our solar system that orbited with a semimajor axis of (average distance) 4.0 au from the sun. using kepler's third law, calculate its orbital period. 04.0 years o 8 years o 64 years o 128 years

Based on what you know about the location of the earth in relation to the sun, why is this called the goldilocks zone in other galaxies? a. it's a region that exhibits a weak gravitational pull, thus maintaining a safe distance from the sun. b. it's an area that doesn't experience any major weather events that could cause mass extinctions. c. it's an area that's an optimal distance from the sun for potentially supporting life. d. it's a region that's unaffected by asteroid or meteor impacts.