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1. A spacecraft is travelling at 0.6c. The astronauts are watching fireworks displays on Earth to celebrate New Years. The astronauts are trying to figure

1. A spacecraft is travelling at 0.6c. The astronauts are watching fireworks displays on Earth to celebrate New Years. The astronauts are trying to figure out which cities are which by figuring out the time between the displays. The astronauts see two sets of fireworks 2 hours apart. What is the time between the fireworks displays? [3 marks]

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