Dark energy, a force that pushes space to expand faster and faster, can cause galaxy mergers to stall even when galaxies appear to be on a collision course, because the expansion of space stretches the gap between them faster than gravity can pull them together, creating a 'cosmic traffic jam' where galaxies drift apart forever despite their gravitational attraction.
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Dark Energy Horizon: Why Galaxy Mergers Stall Beyond Light Speed #shortsAdded:
What if two galaxies could get trapped mid-collision forever? Picture stars starting to merge, then suddenly slowing as their dance hits the edge of light speed. Dark energy isn't dark dust. It's a force pushing space to expand faster and faster. So, gravity pulls, but expansion stretches [music] the gap between galaxies, making them drift apart just when they should slam together. That's why mergers can stall beyond the speed limit of influence, even when the galaxies look like they're headed for a crash. Want more cosmic chaos? Subscribe.
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