An astronomer observes a planetary system with 3 planets orbiting a star. Planet X has an orbital period of 6 Earth years, Planet Y is 3 times farther from the star, and Planet Z is 4 times farther than Planet Y. Using Kepler’s third law (T² ∝ R³), what is the orbital period of Planet Z?

Wed, 06 May 2026 06:20:00 +0000

Content under review