银河系内出现的新星。
每十年至少有一颗超新星在我们的银河系中出现。
银河系中的超新星最有可能是大多数宇宙射线到达地球的来源。
Supernovas in the Milky Way are the likeliest source for most of the cosmic rays reaching Earth.
在那个星系的中心，新星的诞生比我们银河系的新星诞生速度要快10倍，集合了一大堆的新星。
In the galaxy's centre, young stars are being born 10 times faster than they are inside our Milky Way galaxy, resulting in a huge concentration of young stars.
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