A star is 4 light-years away. About how long does its light take to reach us?
AAbout 4 days
BAbout 4 years
CAbout 40 years
DAbout 4 hours
Answer & Solution
Correct answer: B. About 4 years
A light-year is the distance light covers in a year, so 4 light-years takes about 4 years.
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