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  "path": "/energy/antares-modular-next-gen-us-nuclear-reactor-critical/",
  "publishedAt": "2026-06-09T06:47:56.000Z",
  "site": "https://newatlas.com",
  "tags": [
    "Continue Reading",
    "Energy",
    "Engineering",
    "Small Modular Nuclear Reactor",
    "Nuclear",
    "Power Stations"
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  "textContent": "Nuclear energy in the West took another step forward as the first privately developed, non-light-water reactor to go critical in the United States in more than 40 years reached a major milestone when the Antares Nuclear Mark-0 test reactor came online at Idaho National Laboratory.\n\nContinue Reading\n\n**Category:** Energy, Engineering\n\n**Tags:** Small Modular Nuclear Reactor, Nuclear, Power Stations",
  "title": "Modular next-gen US nuclear reactor goes critical"
}