Simulations Trace First Stars' Role in Cosmic Chemical Enrichment

Ultra-detailed simulations from the MEGATRON project reveal how the first stars illuminated the dark early Universe and seeded it with heavy elements such as carbon, oxygen, and iron. By modeling the birth, evolution, and explosive deaths of these primordial stars, the study connects the light seen by the James Webb Space Telescope (JWST) in the earliest galaxies to the chemical fingerprints preserved in the oldest stars in the Milky Way. This bridge allows astronomers to test theories of early star formation and nucleosynthesis against both distant observations and nearby stellar archaeology. The findings refine our understanding of how the first luminous objects shaped the chemical makeup of the cosmos.