A new study has revealed an unexpected way that galaxies collide and merge in the cosmic web of the universe: through cosmic filaments! These filaments, which are like cosmic strings, are created by the gravitational attraction of large structures in the universe and act as pathways for galaxies to travel through. This discovery could help explain why some galaxies are found in clusters, while others are found in isolation. By understanding how galaxies merge through these cosmic filaments, astronomers can gain insight into the evolution of the universe.

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source: Phys.org