TimelineOct 23, 2026actionSmall reactorsAntares Clears First DOE Authorization Gate for Mark-1 (TMCnet)[1][2][3]1TMCnetOct 23, 20262Business WireOct 23, 20263AntaresOct 23, 2026Key score 0.61iNovelty 0.35i3 sources, 3 outletsAll 3 sources