{
  "id": 16652553,
  "title": "This New Simulation of the Early Universe Is Massive, Detailed and Gorgeous",
  "url": "https://urgent.news/2026/10/26/this-new-simulation-of-the-early-universe-is-massive-detailed-and",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-10-26T19:34:51.000Z",
  "source": {
    "name": "CNET",
    "slug": "cnet",
    "url": "https://www.cnet.com/science/space/lumina-project-simulates-the-early-universe/"
  },
  "original_language": "en",
  "account": "The origin of the universe remains one of the greatest scientific enigmas. Researchers at the Center for Astrophysics, a collaboration between Harvard and the Smithsonian, have developed the Lumina Project, a simulation of the early universe that surpasses any previous attempt in both size and detail. The simulation covers a region equivalent to a cube roughly 1.5 billion light-years on each side and spans the first 2 billion years of cosmic history. This includes the interaction of regular matter, dark matter, and radiation during this critical period.\n\nThe Lumina simulation leverages data from NASA’s James Webb Space Telescope and other telescopes to recreate the early universe with breathtaking detail. The supercomputer Frontier at Oak Ridge National Laboratory in Tennessee powered the simulation, utilizing around 15,000 of its 37,000 GPUs. This computational might allowed the creation of a self-consistent model, encompassing both hydrogen and helium reionization processes.\n\nOne of the Lumina Project's key features is its ability to study these processes together, offering insights into their simultaneous occurrence and immediate impact on the evolving universe. Aaron Smith, an assistant professor of physics at the University of Texas at Dallas and co-author of the study, expressed the team's excitement at the prospect of following the transformation of hydrogen and helium into their current forms across a vast cosmic volume.\n\nThe simulation has already yielded intriguing predictions, such as the existence of fewer massive galaxies than observed by the James Webb Space Telescope. It has also captured the attention of researchers due to its spectacular visuals, showcasing various interactions within the early universe, including gas temperature variations, chemical reactions, and the locations of early galaxies and stars. The simulation also accounts for the presence of dark matter and dark energy, adding another layer of complexity and beauty to the visualization.",
  "summary": "The Lumina Project spans 2 billion years and will allow scientists to test theories and predictions about the origins of the cosmos.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}