Fermi’s latest gamma-ray census highlights cosmic mysteries


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Big machines: 2 radiation generators mark major milestones in helping protect the US


Two remarkable pulsed-power machines used to test the nation’s defenses against atomic weapons have surpassed milestones at Sandia National Laboratories: 4,000 firings, called ‘shots,’ on the Saturn accelerator and 9,000 shots on the HERMES III…

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