He has no nose, just two black holes in his yellow face.

他没有鼻子，在他黄色的脸上只有两个黑洞。

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He has no nose, just two black holes in his yellow face. And his eyes!

他没有鼻子，在他的黄色的脸上只有两个黑洞。而他的眼睛！

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The waves that emanate from the collision of two black holes should be detectable.

两个黑洞相撞时产生的波动可以测到。

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In a talk at TED, Levin illustrated her point by conjuring up an example of two black holes spinning around each other and coalescing.

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The gravitational field between the two black holes was so strong that it had never been possible to test Albert Einstein's theory of General Relativity in such an extreme situation.

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The coalescence of two black holes would create even stronger gravitational waves, but physicists believe that there are fewer black holes than neutron stars, so such events would be rarer.

ECONOMIST: Fundamental physics