Problem an astronaut takes a trip to pandora which is, Ask an Expert

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Problem: An astronaut takes a trip to Pandora, which is located a distance of 4.37 light-years fem the Earth. If the spaceship moves at a constant speed of 0.8c,

Part A: How long is the trip to Pandora as measured by the astronaut (from inside the spaceship)?

I need help to find how long the trip to Pandora as measured by the astronaut.

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