#创作团队：
选题策划：HZXZ
文字：Takeko
设计：毛尖尖
#参考来源：
https://www.forbes.com/sites/startswithabang/2018/10/18/this-is-how-we-know-there-are-two-trillion-galaxies-in-the-universe/?sh=281144ae5a67
https://www.jpost.com/health-science/astronomers-were-wrong-about-the-number-of-galaxies-in-universe-655425
https://www.seti.org/universes-greatest-expansion
https://www.skyatnightmagazine.com/space-science/great-debate-1920-curtis-shapley-astronomy/
https://jwst.nasa.gov/content/science/galaxies.html
https://www.space.com/23285-galaxies-classification-type-explainer-infographic.html
https://www.bbc.com/news/science-environment-43841025
http://ircamera.as.arizona.edu/NatSci102/NatSci/lectures/starbursts.htm
https://www.science.org/content/article/galaxy-collisions-cause-starbursts
https://webbtelescope.org/resource-gallery/articles/pagecontent/filter-articles/what-are-active-galactic-nuclei
https://www.britannica.com/science/supercluster
https://astronomy.swin.edu.au/cosmos/g/galactic+filaments
http://www.lamost.org/~yzhao/astro/sdss.html