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What is the fastest a galaxy or other celestial body has been measured to (or can) travel?

2 edited title
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What is the fastest a galaxy or other celestial body has been measured to (or can) travel?

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What is the fastest a galaxy can travel?

Our solar system travels at an average speed of 515,000 mph and our galaxy at 1.3 million mph through space. What is the fastest moving body in space recorded and the fastest can a black hole or galaxy travel through the universe?