New simulations suggest globular clusters form in multiple ways and point to a mysterious new type of star system that may already lie hidden in the Milky Way. For centuries, astronomers have tried to explain how globular clusters, among the oldest and densest stellar systems in the universe, first formed. Now, a study led by […]



Summary

New simulations reveal diverse formation pathways for globular clusters, challenging traditional theories. The research suggests these ancient, dense star groups can arise from mergers of smaller star clusters, interactions within dwarf galaxies, and through tidal stripping from galaxies. Crucially, the simulations also predict the existence of a novel type of star system: a “tidal dwarf cluster” formed from material stripped from larger galaxies. This system would be less massive than typical globular clusters and may already be lurking undetected within the Milky Way, offering a new avenue for understanding galaxy evolution.

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