“Earth’s night sky as Milky Way and Andromeda merge | Astronomy Essentials | EarthSky” https://earthsky.org/astronomy-essentials/earths-night-sky-milky-way-andromeda-merge
“Earth’s night sky as Milky Way and Andromeda merge | Astronomy Essentials | EarthSky” https://earthsky.org/astronomy-essentials/earths-night-sky-milky-way-andromeda-merge