# Light-years away, distance traveled in light years.

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Part 1

A certain star is 73.3 light-years away. How many years would it take a spacecraft traveling 0.959c to reach that star from Earth, as measured by observers on Earth?

Part 2

How many years would it take to reach that star from Earth, as measured by observers on the spacecraft?

Part 3

What is the distance (in lightyears) traveled according to observers on the spacecraft? Do not enter units.

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#### Solution Preview

Space Travel

Part 1

A certain star is 73.3 light-years away. How many years would it take a spacecraft traveling 0.959c to reach that star from Earth, as measured by observers on Earth?

Part 2

How many ...

#### Solution Summary

The expert examines how far a star is from Earth by measuring the distance traveled in light year.

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