The burst crushed the previous record holder for most distant object visible without assistance—the galaxy M33—by three orders of magnitude.
这次爆发打破了先前的肉眼可见最远天体的纪录--- M33 -3星系---提高了3个数量级。
The brightest stars are first-magnitude stars while those just visible to the human eyes are sixth-magnitude stars.
最亮的星球是一等星，那些肉眼刚能看见的星球算是六等星。
The brightest stars are first-magnitude stars while those just visible to the human eyes are sixth-magnitude stars.
最亮的星球是一等星，那些肉眼刚能看见的星球算是六等星。
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