An astronomer on Earth observes a meteoroid in the southern skyapproaching Earth at a speed of 0.760c. Atthe time of its discovery, the meteoroid is 23.0 light-years from Earth. Calculate the following.
(a) the time required for the meteoroid toreach Earth, as measured by Earthbound astronomer
1 yr
(b) this time as measured by a tourist on the meteoroid
2 yr
(c) the distance to Earth as measured by the tourist
3 ly


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