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    • When Was Earth Last Struck by a Supernova?

      When Was Earth Last Struck by a Supernova?

      Scientific American· 7 hours ago

      In this case, a supernova within about 160 light-years, or 1.5 quadrillion kilometers, would qualify. Iron 60 is a radioactive isotope of iron that...

    • Your Town: May 19, 2024

      The Daily Sentinel· 5 days ago

      Attend an Alpine Bank Junior College World Series baseball game, or two, or 19. Visit the Vietnam War Memorial in Fruita. Memorial Day weekend events are ...