Pulsar: a dense, rapidly rotating star that emits pulses of light.

脉冲星：高密度、快速旋转、发射脉冲光的星体。

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It is the clock of the rotating neutron star.

中子星旋转的计时，如果中子星。

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Most of that gas flows inward and adds to the mass of the forming star, but the gas is rotating. The centrifugal force from that prevents some of the gas from reaching the forming star.

大多数气体向里流动，增加正在形成的恒星的质量，但这些气体一直在旋转。

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Stars are the result of the gravitational collapse of huge clouds of gas and dust, whereas planets are thought to evolve by the accretion of the material left over from such collapses, which forms a rotating disc around the newly created star.

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It was that pulsars are rotating neutron stars, the super-dense last stage of collapse of a star not quite heavy enough to form a black hole.

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