The Earth is not falling into the Sun due to a combination of factors, primarily related to its orbital motion and the gravitational forces involved.
Orbital Motion: The Earth is in a state of constant motion around the Sun due to its orbital velocity. It follows a nearly circular path around the Sun, governed by the balance between its forward motion and the gravitational pull of the Sun.
Gravitational Force: The Sun exerts a strong gravitational force on the Earth, which acts as a centripetal force, constantly pulling the Earth toward it. However, the Earth's motion perpendicular to the gravitational pull creates a balance, resulting in a stable orbit.
Inertia: The Earth's inertia, which is its resistance to changes in motion, helps maintain its orbit around the Sun. Even though gravity is constantly pulling the Earth toward the Sun, its inertia keeps it moving forward, preventing it from falling directly into the Sun.
In summary, the combination of the Earth's orbital motion, the gravitational force of the Sun, and the Earth's inertia work together to maintain a stable orbit and prevent the Earth from falling into the Sun.