Dying Stars May Create New Universes Instead of Black Holes

Physicists propose that the collapse of a massive dying star could create a tiny new universe instead of forming a black hole.

This theoretical model challenges the traditional understanding of stellar death and the nature of singularities. By offering an alternative to the event horizons predicted by general relativity, the research could explain celestial objects that appear to be black holes but may lack their defining characteristics.

The study, released June 14, 2026 ^[1], suggests that the extreme conditions during the death of a massive star might trigger a cosmic birth. Rather than crushing all matter into a single point of infinite density, the collapse could lead to the expansion of a new, separate universe within the star.

This mechanism provides a theoretical path toward the creation of gravastars. These hypothetical objects would resemble black holes in their gravitational pull but would not possess a singularity at their center. The model suggests that the internal pressure of a budding universe could prevent the final collapse into a black hole.

General relativity typically predicts that once a star reaches a certain mass threshold, its collapse is inevitable and irreversible. This new research suggests that quantum effects or other theoretical mechanisms might intervene during the final moments of a star's life, creating a bridge to a new spacetime region.

The researchers said that this model helps address contradictions in current physics regarding what happens at the center of a black hole. Because singularities are mathematically problematic, the idea of a budding universe provides a way to avoid the infinite density that current laws of physics cannot fully explain.