Imagine an astronaut on a trip to Sirius, which lies 8
Chapter 26, Problem 26.20(choose chapter or problem)
Imagine an astronaut on a trip to Sirius, which lies 8 light-years from Earth. Upon arrival at Sirius, the astronaut fi nds that the trip lasted 6 years. If the trip was made at a constant speed of 0.8c, how can the 8-light-year distance be reconciled with the 6-year duration?
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