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potatoleg

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- 1

- Homework Statement:
- A spaceship is on its way to Alpha Centauri, 4.2 light years from Earth, at 0.6 c. The time observed by observers on Earth is 7 years. What time passes on the ship clock as observed by Earth observers during the trip?

- Relevant Equations:
- Tv = γTo

In this case, γ = 1/√(1-v^2/c^2) = √(1-0.6^2) = 0.8

However, I'm not sure if time observed by Earth is proper time or moving time. The definition of proper time in my textbook states that it is 'the time measured in a frame of reference where the events occur at the same points in space. I'm not sure which one applies here

However, I'm not sure if time observed by Earth is proper time or moving time. The definition of proper time in my textbook states that it is 'the time measured in a frame of reference where the events occur at the same points in space. I'm not sure which one applies here