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《新科学家》 第3587期 · 2026年3月21日 · 中文解读

什么是星系?这是一个难以回答的问题

What is a galaxy? That’s a difficult question to answer · Chanda Prescod-Weinstein
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这篇讲什么
本文探讨了天文学家在区分星系与球状星团时面临的挑战,以及这一区分对天体物理学、宇宙学和粒子物理学可能产生的影响。
原文开头
Views Columnist What is a galaxy? That’s a difficult question to answer Figuring out what really counts as a galaxy could shake up astrophysics, cosmology and particle physics, says Chanda Prescod-Weinstein WHEN is a collection of stars just a collection of stars and when is it a galaxy? This sounds like a nerdy joke of some kind, but it is an actual scientific question the astronomy community is struggling over. Those of us who aren’t professional stargazers are used to thinking of galaxies as complete objects. When I use telescopes in my backyard to look at galaxies, I see spirals emitting the bright light of billions of stars. …
摘自《新科学家》(New Scientist)第3587期 · 2026年3月21日,Chanda Prescod-Weinstein。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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