- #31
OSalcido
- 66
- 0
if everything is receding from everything... how is it that our galaxy will eventually collide with the andromeda galaxy?
Could We See the Edge of the Universe?
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The discussion centers on the concept of the universe's expansion and the possibility of observing its edge. Light travels at a finite speed, meaning there are regions of the universe from which light has not yet reached us, defining the 'particle horizon.' As the universe accelerates in its expansion, the number of observable objects within our 'past light cone' decreases over time. The idea of a central point of the Big Bang is challenged, emphasizing that every point in the universe is receding from every other point, akin to the expansion of a balloon. Ultimately, the universe's expansion does not imply a center, and understanding its geometry is crucial to grasping these concepts.