An international team of researchers has unveiled a groundbreaking supercomputer model named "Lumina," offering one of the most detailed glimpses yet into the universe's early history, according to a recent study published in the scientific journal Monthly Notices of the Royal Astronomical Society. The simulation addresses a pivotal era known as cosmic reionization.
Following the Big Bang, ultraviolet radiation from the cosmos's earliest stars and black holes stripped electrons from hydrogen atoms, fundamentally changing how galaxies formed and allowing light to travel freely across space. While powerful observatories like NASA’s James Webb Space Telescope capture distant galaxies as they appeared when the universe was still young, mapping this vast timeline requires equally massive computational tools to fill the gaps in its mysterious history.
Lead author Oliver Zier, a postdoctoral research fellow at the Center for Astrophysics, Harvard & Smithsonian, noted that the simulation successfully captures both wide-scale cosmic structures and individual galaxies. For the first time, researchers can study the simultaneous transformation of both hydrogen and helium within a single, expansive model. Scientists plan to compare Lumina's scenarios against telescope observations to test cosmological theories and uncover any missing physics in current models.
