Physics, 28.05.2021 04:10 harleyandpope90

Galaxy A is receding from us at 300 km/s. In the opposite direction of the sky, Galaxy B is also receding from us at 300 km/s. If we're in Galaxy B, how fast is Galaxy A receding from us in km/s

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Galaxy A is receding from us at 300 km/s. In the opposite direction of the sky, Galaxy B is also rec...

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