White dwarfs are the hot, superdense remnants of spent stars.
白矮星是一种高热度、高密度的晚期恒星。
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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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Neutrinos are generated in prodigious quantities in stellar explosions known as supernovas, and their ghostliness lets them escape the superdense centre of such an explosion unhindered.