It might be an interesting thinking of large objects like comets,and
meteors hitting the Earth at great speeds have effected the Earth's
spin,,tilt and wobble. We have to keep in mind the Earth like all
objects immersed in space has no weight. However it does have very great
inertia. With this great inertia,and no weight this shows to people
that don't understand inertia how to visualize it. Bert