As observed on earth, a certain type of bacteria is known to double in number every 24 hours. Two cultures of these bacteria areprepared, each consisting initially of one bacterium. One culture is left on earth and the other placed on a rocket that travels at a speedof 0.919c relative to the earth. At a time when the earthbound culture has grown to 64 bacteria, how many bacteria are in the cultureon the rocket, according to an earth-based observer?

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