The study of such properties will help astronomers to test cosmological models that predict galacticstructure formation.
这些性质的研究将帮助天文学家测试预测星系结构形成的宇宙学模型。
2
The Sloan Great Wall, a vast galactic filament, is the largest known structure in the Universe.
“斯隆长城”是一条巨大的丝状体，是目前宇宙中已知的最大的结构。
3
The high energy radiation mechanism research of active galactic nuclei is a key to understanding their structure, evolution features and origin of central drive.