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Another way of understanding the situation is to remember the equivalence Einstein explained between gravitational and inertial forces.
A reference frame in which star motion is ignored and the stars are assumed to be at rest is approximately an inertial reference frame and is often adequate for many purposes.
The missile has new GPS / INS (global positioning / inertial navigation) guidance and kinetic warhead.
In Newton's theory, all three of these masses - the inertial mass, the active and passive gravitational masses - are equivalent.
If its axis were to be suddenly shifted from its normal inclination, inertial forces produced in such a change would literally tear the earth apart.
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