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![WorldAndScience Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::511402689.png) World and Science [@WorldAndScience](/creator/twitter/WorldAndScience) on x 2.6M followers
Created: 2025-07-21 22:02:11 UTC

When Andromeda was first discovered, it was thought to be just a nebula, since people believed the Milky Way made up the entire universe.

Later on, we learned that Andromeda is actually a separate galaxy—one that’s twice the size of our own!

![](https://pbs.twimg.com/media/GwadSh0XgAEvQ2k.jpg)

XXXXXX engagements

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**Related Topics**
[just a](/topic/just-a)
[andromeda](/topic/andromeda)

[Post Link](https://x.com/WorldAndScience/status/1947416843909476458)