Antares Nuclear microreactor reaches critical status at Idaho National Lab
Antares Nuclear’s Mark-0 Microreactor Achieves Criticality Antares Nuclear announced on Thursday that its Mark-0 microreactor has reached criticality at the Idaho National Laboratory. This marks it as the first new reactor to hit this milestone under the U.S. Department of Energy’s pilot program, which was established following President Trump’s 2025 executive order aimed at speeding […]