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Astronomers Capture the Firstever 'Image' of Dark Matter

机译:天文学家捕获了黑暗物质的第一个“图像”

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摘要

It has been known since early 19th century that all matter that we see around - the Earth, Sun, stars and galaxies - is made up of atoms comprising protons, neutrons and electrons. But 20th century brought a surprising discovery that ordinary, or baryonic, matter that makes up the visible universe comprises less than 5 percent of the mass of the universe. The rest is made up of unknown entities dubbed dark matter and dark energy. Dark matter is an invisible substance that makes up 25 percent of the universe, and dark energy is a force that repels gravity and makes up the rest 70 percent. Although dark matter makes up about 25 percent of the universe, it doesn't shine, reflect, or interact with light in any way, so it is difficult to study. The only way to study it is by observing its gravitational effect.
机译:自19世纪初以来,我们已经知道周围的所有物质-地球,太阳,恒星和星系-都是由质子,中子和电子组成的原子组成的。但是20世纪带来了一个令人惊讶的发现,即构成可见宇宙的普通物质或重子物质不到宇宙质量的5%。其余部分由被称为暗物质和暗能量的未知实体组成。暗物质是一种不可见的物质,占宇宙的25%,暗能量是一种排斥重力的力量,占其余70%。尽管暗物质约占宇宙的25%,但它不会以任何方式发光,反射或与光发生相互作用,因此很难研究。研究它的唯一方法是观察其引力作用。

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    《Science and Culture》 |2017年第8期|257-258|共2页
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    Biman Basil;

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