Consider an extrasolar “rogue” planet approaching our solar system. Identify all of the following three statements that are true of their gravitational interaction: 1) If the total energy is greater than zero, the planet will enter a stable orbit about the Sun; 2) If the total energy is less than zero, the planet will enter a stable orbit about the Sun; 3) If the total energy is equal to zero, the path of the planet will form a parabola.