Q556
Light from the nearest star reaches the earth in
A.
43 minutes
B.
4.3 seconds
C.
4.3 minutes
D.
4.3 years
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Light from the nearest star reaches the earth in 4.3 years. The closest star to Earth are three stars in the Alpha Centauri system. The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. They are an average of 4.3 light-years from Earth. The third star is Proxima Centauri. It is about 4.22 light-years from Earth and is the closest star other than the sun.