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Longest tidal tail
January 11 , 2025
59 days
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- Astronomers discovered a nascent ultra-diffuse galaxy forming at the end of the longest tidal tail ever observed, associated with the galaxy NGC 3785.
- This is located approximately 430 million light-years from the Earth in the Leo constellation.
- The tidal tail was extends an impressive 1.27 million light-years long from NGC 3785.
- It is a result of gravitational interactions between this galaxy and a neighbouring one.
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