What Two Factors Keep the Planets in Orbit?

Answer

The two factors that keep the planets in orbit are the force of gravity and inertia. The gravitational force of attraction keeps the planets tethered to the Sun, while the inertia of their orbital path keeps them from either ejecting themselves from the solar system or falling into the Sun.
Reference:
Q&A Related to "What Two Factors Keep the Planets in Orbit?"
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