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325 light years is about 800,000,000,000 times as as The Mississippi River.
In other words, it's 816,400,000,000 times the of The Mississippi River, and the of The Mississippi River is 0.000000000001225 times that amount.
(from Lake Itasca, Minnesota through Pilottown, Plaquemines Parish, Louisiana)
The total length of the Mississippi River is 0.0000000003981 light years. Prior to the development of soil erosion programs, the Mississippi River would carry approximately 400 million metric tons of sediment from its banks to the Gulf of Mexico every year.
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