A spaceship departs from the solar system (event $A$ ) and travels at a constant velocity to a distant star. It then returns at a constant velocity, finally returning to the solar system (event $B$ ). A clock on the spaceship registers which of the following kinds of time between these events?
A) Proper time
B) Coordinate time
C) Space time interval
D) Proper time and space time interval
E) Coordinate time and space time interval
F) All three

Question

Quizplus · Accepted Answer

The clock on the spaceship measures the proper time, which is the time interval measured by a clock that moves with the object in question, in this case, the spaceship.

A Spaceship Departs from the Solar System (Event AAA ) and Travels at a Constant Velocity to a Distant

A Spaceship Departs from the Solar System (Event $A$ ) and Travels at a Constant Velocity to a Distant