Question

4. Name the star (after the sun) which is closest to the earth.

5. Why is the distance between stars and planets expressed in light year?
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Answer 1

Explanation:

1. Alpha Centauri A

2. The distance between the stars is so large that Kilometers becomes a very small unit. Hence, the distance between stars and planets are expressed in light years . One Light Year means Distance travelled by light in 1 Year.

Answer 2

Explanation:

4. PROXIMA CENTAURI

5 .The distance between the stars is so large that Kilometers becomes a very small unit. Hence, the distance between stars and planets are expressed in light years . One Light Year means Distance travelled by light in 1 Year

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