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The star passes very close to the Milky Way’s supermassive black hole and could reveal the black hole’s spin by tracking how it warps the star’s orbit.
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A SPECTACULAR lunar eclipse is set to light up skies across Spain just a fortnight after the country witnessed a historic total solar eclipse. The celestial event will take place
A compact set of physical equations delivers a unified, first-principles explanation for how lightning's most destructive surge of current is born, races towards the clouds, and fades.
冻土的一个神秘特征，可以用非牛顿流体物理学来部分解释。这就是“奥布雷克”(Oobleck)。
Astronomers have discovered the fastest known star in our galaxy, the Milky Way, orbiting the black hole at its center. The star, named S301, was detected with the European Southern Observatory's Very…
Researchers at Washington University School of Medicine in St. Louis have discovered lymph node-like structures in the skull bone marrow of mice for the first time and demonstrated that they act as…
The human immune system has specialized cells called CD4 cytotoxic T lymphocytes (CD4 CTLs), which have been shown to kill tumor cells in some cancers.
