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cougarAstronomers have discovered the most massive neutron star (J0740+6620 2.14M) to date, a millisecond pulsar approximately 4600 lys from Earth. Nature Astronomy 10.1038/s41550-019-0880-2

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cougar“灿烂的人生如稻穗,年轻时总是冲天,而越成熟就越低头。”——日本谚语

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cougar从榆中骑自行车回兰州,47.5公里用时两小时多,最快时速冲到46km/h

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