The shear zone and North Dabie dome both resulted from gravity collapse during Early Cretaceous. The current North Dabie unit was similar to the Cordillerantype metamorphic core complex.

该剪切带与北大别穹隆皆为早白垩世造山后重力垮塌中形成的，具有科迪勒拉型变质核杂岩特征。

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Discussed rock mass gravity collapse mechanism caused by under ground and overburden failure and surface settlement disaster, offered some underground mining and surface protective measures.

论述了地下矿层开采引起的岩体重力变形机理和造成的覆岩破坏、地表沉陷等灾害，提出了井下开采和井上防护的技术措施。

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One theory is that they are youngsters, giving off heat as they collapse inward due to the pull of their own gravity, but nobody knows for sure.

有一个说法是，它们还处于幼年，由于自己的重力所拉，在衰竭的同时发出热量，但没有人能肯定这种说法。

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Acting alone, gravity would cause stars to collapse completely, but as long as energy is produced at their centers by nuclear fusion (the joining of atomic nuclei to form new elements, as in a hydrogen bomb), the star is heated and puffed up.

CNN: Why gamma-ray burst shocked scientists

The cosmos was born in the Big Bang about 13.7 billion years ago, and the first stars in the universe are thought to have lit up about 100 million years afterward, when gas finally gathered in clumps dense enough to collapse under their own gravity and ignite nuclear fusion.

MSN: We could soon detect the first stars in our universe

These possible universes will first expand, and then contract and collapse again under the pull of gravity.

ECONOMIST: The universe, it appears, may not be alone