Dark energy acts as a cosmic push that grows stronger as space expands, creating a 'horizon of influence' beyond which galaxies cannot merge despite gravitational attraction; this means the expanding fabric of space itself becomes the limiting factor for galaxy interactions, not just light speed.
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Dark Energy Horizon Explained: Why Galaxy Mergers Stall Beyond Light Speed #shorts追加:
Ever wonder why two galaxies don't just smash together and call it a day? Here's a twist. Dark energy is like a cosmic [music] push that grows stronger as space expands. When galaxies drift farther [music] apart, that push starts winning.
So, instead of merging, their motion stalls and the horizon of influence kicks in. It's like trying to pull two magnets together while the table keeps stretching under you. Beyond a certain limit, light speed isn't the barrier, the expanding [music] space is.
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