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Solve the given problem:

Problem: Energy to Accelerate a Spaceship to Relativistic Speed:

Part 1: How much energy is required to accelerate a spaceship with a rest mass of 116 metric tons to a speed of 0.446c?

Part 2: Every day our Earth receives 1.55 x 10²² J energy from the Sun. If we were able to use 0.85 percent of this energy to accelerate spaceships, then how many missions would be possible in one year?

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