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| "The Mad Moon" | |
|---|---|
| Short story by Stanley G. Weinbaum | |
| Country | United States |
| Language | English |
| Genre(s) | Science fiction |
| Publication | |
| Published in | Astounding Stories |
| Publication type | Periodical |
| Publisher | Street & Smith |
| Media type | Print (Magazine) |
| Publication date | December 1935 |
"The Mad Moon" is a science fiction short story by American writer Stanley G. Weinbaum, first published in the December 1935 issue of Astounding Stories. As did his earlier stories "A Martian Odyssey" and "Parasite Planet", "The Mad Moon" emphasizes Weinbaum's alien ecologies. "The Mad Moon" was the only Weinbaum story set on Io.