Changes

The '''Celestial Sphere''' is anything above the [[troposphere]].  In the [[Einstein]]ian [[Theory of Relativity]], the [[Earth]] can be thought of as a point of reference.

The '''Celestial Sphere''' is an imaginary round surface with an infinite radius on which all objects in the [[sky]] can be thought to be placed.  The concept is used in navigation and an early form of [[astronomy]].

 

== Introduction ==

== Introduction ==

This point of reference is used in basic physics to simplify calculations, and provides results which are accurate enough to use in [[kinetic projectile modelling]]. The art of [[throw]]ing [[stuff]] at other stuff relies on the understanding that the celestial sphere was created on [[day]] [[four]], and that the [[star]]s can be used to measure [[latitude]] and [[longitude]]. When [[gyroscopes]] are employed in the stabilization of moving objects, greater accuracy can be achieved. The combination of gyroscopes and [[stellar navigation]] is used in [[aircraft]] flight, and in [[rocket science]].

This point of reference is used in basic physics to simplify calculations, and provides results which are accurate enough to use in [[kinetic projectile modelling]]. The art of [[throw]]ing [[stuff]] at other stuff relies on the understanding that the celestial sphere was created on [[day]] [[four]], and that the [[star]]s can be used to measure [[latitude]] and [[longitude]]. When [[gyroscopes]] are employed in the stabilization of moving objects, greater accuracy can be achieved. The combination of gyroscopes and [[stellar navigation]] is used in [[aircraft]] flight, and in [[rocket science]].