Is There a Model to Define Earth's Position in the Milky Way?

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A model to define Earth's position in the Milky Way is sought, focusing on how to pinpoint the direction of Earth's path at any moment. The discussion acknowledges that this position is constantly changing due to Earth's orbit and the movement of the solar system. Participants reference existing resources, such as a related thread on Physics Forums, for further insights. The conversation emphasizes the complexity of tracking such dynamic celestial coordinates. Understanding this model could enhance knowledge of Earth's orientation within the galaxy.
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I was hoping someone knows of a model that can define a point on Earth at any given moment that is pointing in the direction of the Earth's path around the Milky Way. I realize that the point would always be changing.
 
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