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    • Gateway - Quartz

      Quartz· 4 days ago

      A team of astronomers has managed to calculate the speed of a distant supermassive black hole’s spin thanks to the object’s chance meeting with a star—which ...

    • Explained: What Is a Supernova?

      ExtremeTech· 6 days ago

      Every so often, a mysterious so-called "guest star" appears in the sky, often far outstripping its cousins in brightness. Astronomers and stargazers have known about such events since at least ...