Below you will find the solution for: At Mount Wilson Observatory in the 1920s Edwin Hubble made the discovery that this isn't a nebula but a large galaxy all its own Jeopardy .
Since you already solved the question At Mount Wilson Observatory in the 1920s Edwin Hubble made the discovery that this isn't a nebula but a large galaxy all its own which had the answer ANDROMEDA, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy September 15 2020
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