The Crab Nebula（蟹状星云） , once considered to be a source of energy so stable that astronomers used it to calibrate their instruments, is dimmin...
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... 巨蟹座55 55 cancri 巨蟹座星云 the crab nebula 鳕场蟹；巨蟹 king crab ...
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the crab nebula
蟹状星云
以上为机器翻译结果，长、整句建议使用 人工翻译 。
And here you see the Crab Nebula.
这是蟹状星云。
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The Crab Nebula is at a distance from us of about 5,000 light-years.
蟹状星云距离我们，大概是5000光年。
A stroboscopic picture, a stroboscopic exposure was made of the center portion of the Crab Nebula.
一张频闪观测仪的图，对蟹状星云的中心，进行频闪观测曝光。
One source of high-energy neutrinos is likely to be supernova remnants, such as the Crab Nebula.
ECONOMIST: Neutrino astronomy
The first is that not all supernova remnants (which are often visible as glowing nebulae, such as the Crab nebula) have pulsars inside them.
ECONOMIST: Pulsars
In a recent paper, Dr Jacobson argues that observations made of synchrotron radiation produced by the Crab nebula (the remnants of a supernova observed in 1054) limit the granularity of space.
ECONOMIST: Planck-scale physics
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