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    • When Was Earth Last Struck by a Supernova?

      When Was Earth Last Struck by a Supernova?

      Scientific American· 5 days 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...

    • Does the Milky Way orbit anything?

      Does the Milky Way orbit anything?

      Space via Yahoo News· 12 hours ago

      A white spiral of stars and gas in space. It seems like everything orbits something in space. Moons orbit planets. Planets orbit stars. Stars orbit the...

    • Look for Vega to find Hercules

      Payson Roundup· 9 hours ago

      If you look to the northeast around 9 p.m., you'll notice a bright, blue star about 20 degrees above the horizon. That star, Vega, lies 26 light years away. This