Question: Two planets are rotating around a star in elliptical orbits. The orbit of planet 1 has semimajor axis a 1 and its period is T

Two planets are rotating around a star in elliptical orbits. The orbit of planet 1 has semimajor axis a1 and its period is T1. The orbit of planet 2 has semi-major axis a2 such that a1=2a2. What is the orbital period of planet 2, T2

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