Multiple Choice
Alpha Centauri is not only the closest star system to us (it is actually a triple star system) but it also seems to be an excellent place to look for extra-terrestrial life.It is about 4.3 light-years away from Earth.If an astronaut claims her journey there and back only took 6.3 years,then how fast was she traveling? (Assume she made a fast turnaround once she arrived there!)
A) 0.65c
B) 0.73c
C) 0.86c
D) 0.81c
E) 0.54c
Correct Answer:
Verified
Correct Answer:
Verified
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