Department of Astronomy, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH, 44106, USA.
Stud Hist Philos Sci. 2021 Aug;88:220-236. doi: 10.1016/j.shpsa.2021.05.008. Epub 2021 Jul 2.
Galaxies are the basic structural element of the universe; galaxy formation theory seeks to explain how these structures came to be. I trace some of the foundational ideas in galaxy formation, with emphasis on the need for non-baryonic cold dark matter. Many elements of early theory did not survive contact with observations of low surface brightness galaxies, leading to the need for auxiliary hypotheses like feedback. The failure points often trace to the surprising predictive successes of an alternative to dark matter, the Modified Newtonian Dynamics (MOND). While dark matter models are flexible in accommodating observations, they do not provide the predictive capacity of MOND. If the universe is made of cold dark matter, why does MOND get any predictions right?
星系是宇宙的基本结构单元；星系形成理论旨在解释这些结构是如何形成的。我追溯了星系形成的一些基础思想，重点强调了非重子冷暗物质的必要性。早期理论的许多元素在与低表面亮度星系的观测结果接触时都没有幸存下来，这导致需要辅助假设，如反馈。失败点往往可以追溯到暗物质的替代物——修正牛顿动力学（MOND）的惊人预测成功。虽然暗物质模型在适应观测结果方面具有灵活性，但它们并没有提供 MOND 的预测能力。如果宇宙由冷暗物质组成，为什么 MOND 的预测是正确的？
