Nearly 3,000 exploding stars challenge our understanding of the Universe

The largest collection of exploding white dwarf stars ever compiled is providing fresh evidence that dark energy, the mysterious force responsible for the Universe's accelerating expansion, may change over time. The findings challenge a central assumption of modern cosmology and could help scientists better understand how the Universe evolves.

An international research team led by scientists at the University of Queensland's School of Mathematics and Physics brought together observations of 2,884 Type Ia supernovae. These powerful stellar explosions serve as important tools for measuring distances across the Universe, allowing astronomers to trace its expansion history.

PhD candidate Ryan Camilleri said the project establishes a new international standard for supernova cosmology. By bringing decades of measurements into a unified dataset, researchers have created their most detailed picture yet of how cosmic expansion has changed over time.

"We've rebuilt 3 decades of astronomical observations into a single, consistent framework," Mr. Camilleri said.