January 26, 1909 (Tuesday)
- In Heidelberg, German astronomer Max Wolf discovered SN 1909a, the first supernova observed from Earth in the Pinwheel Galaxy, and only the 11th observed overall. The nova itself happened more than 27 million years earlier in the galaxy, located that many light years distant, in the direction of Ursa Major.
- A trial in British India brought out a conspiracy to set up an independent kingdom there.
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