The fast-spinning star is a pulsar, a superdense chunk of matter left over when a massive star explodes, then collapses in on itself.

这颗快速旋转的恒星是脉冲星，也就是大质量恒星爆炸后经内部坍缩形成的超高密度星体。

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In fact, a pulsar seems to be fleeing from the fast-spinning star, suggesting the two were once a pair that split up when a companion star exploded and became the pulsar we see today.

事实上，一颗脉冲星好像正在脱离这颗快速旋转的恒星，这表明这两颗恒星曾经是一对，当其中一颗伴星发生爆炸并变成了我们看到的脉冲星之后，两者开始分离。

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X-ray pulsar that spins fast enough to become a millisecond pulsar once it has consumed its accretion disc.

ECONOMIST: The dizziest, giddiest stars