The plot: When Mother Earth's molten core stops spinning for unknown reasons, a team of scientists must go to the centre and detonate a hydrogen bomb to get it to spin again.

主要情节：当大地之母的核心不是什么原因停止转动时，一队科学家们必然要去中心并且要引爆它使它再一次转动。

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At the centre of a Kerr black hole, there is no point singularity, but rather a ring singularity-a spinning one-dimensional ring held open by its own momentum.

科尔黑洞中心是不是奇点而是奇环-由自身动量维持的一维环形。它有两个视界(外部视界和内部视界)以及一个椭圆形的能层(ergosphere)。

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