The gravity of the sun and the planets works together with the inertia to create the orbits and keep them consistent. The gravity pulls the sun and the planets together, while keeping them apart. The inertia provides the tendency to maintain speed and keep moving.Apr 10, 2018
Decreases. The higher you go up, the less air will push on your body. Thats why astronaughts need space suits in space to keep their bodies pressure-ized.