【参考資料】
■NASA"Messier 31"
https://science.nasa.gov/mission/hubble/science/explore-the-night-sky/hubble-messier-catalog/messier-31/
■NASA"Messier 32"
https://science.nasa.gov/mission/hubble/science/explore-the-night-sky/hubble-messier-catalog/messier-32/
■NASA"Andromeda Galaxy”
https://science.nasa.gov/photojournal/andromeda-galaxy/
■NASA"NASA’s Hubble Traces Hidden History of Andromeda Galaxy"
https://science.nasa.gov/missions/hubble/nasas-hubble-traces-hidden-history-of-andromeda-galaxy/
■NASA"Nighttime Sky View of Future Galaxy Merger"
https://science.nasa.gov/asset/hubble/nighttime-sky-view-of-future-galaxy-merger-2/
■NASA"Our Neighbor Andromeda"
https://science.nasa.gov/photojournal/our-neighbor-andromeda/
■NASA"The Infrared Face of the Andromeda Galaxy"
https://science.nasa.gov/photojournal/the-infrared-face-of-the-andromeda-galaxy/
■NASA"Hubble Maps Giant Halo Around Andromeda Galaxy"
https://science.nasa.gov/missions/hubble/hubble-maps-giant-halo-around-andromeda-galaxy/
■NASA"The Fate of the Milky Way, Andromeda, and Triangulum Galaxies"
https://science.nasa.gov/asset/hubble/the-fate-of-the-milky-way-andromeda-and-triangulum-galaxies/
■NASA"Infrared Universe: Andromeda Galaxy"
https://science.nasa.gov/asset/webb/infrared-universe-andromeda-galaxy/
■NASA"Sparkling Andromeda"
https://www.nasa.gov/image-article/sparkling-andromeda/
■NASA”NASA Images Help Explain Eating Habits of Massive Black Hole”
https://www.jpl.nasa.gov/news/nasa-images-help-explain-eating-habits-of-massive-black-hole/
■NASA"NASA’s Hubble Space Telescope Images the Dense Nucleus of Galaxy M32"
https://science.nasa.gov/missions/hubble/nasas-hubble-space-telescope-images-the-dense-nucleus-of-galaxy-m32/
■ESA”Our neighboring galaxy's unusual core”
https://esahubble.org/images/heic0512a/
■ESA"Hubble finds giant halo around the Andromeda Galaxy"
https://esahubble.org/images/opo1515a/
■ESO"Scanning a galaxy halo”
https://www.eso.org/public/germany/blog/scanning-a-galaxy-halo/?lang
■nature astronomy”No certainty of a Milky Way–Andromeda collision”
https://www.nature.com/articles/s41550-025-02563-1
■IVAN DEBONO”The earliest image of another galaxy”
https://www.idebono.eu/2015/09/16/the-earliest-image-of-another-galaxy/
■SPACE.com"The Andromeda Galaxy Is Not Bigger Than the Milky Way After All"
https://www.space.com/39751-andromeda-galaxy-not-bigger-than-milky-way.html
■中村真哉 編/2023年『文系のための東大の先生が教える銀河宇宙』ニュートンプレス
【タイムテーブル】
00:00 冒頭
00:33 天の川銀河が宇宙の全てだった時代
05:07 アンドロメダ銀河の最高解像度の実写画像
08:31 アンドロメダ銀河の伴銀河
10:40 アンドロメダ銀河の中心
13:34 アンドロメダ銀河は小さい?
17:09 アンドロメダ銀河と天の川銀河の衝突
21:28 最後に
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