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Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth?
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Distance between stars are very large in magnitude. Hence a new unit is required so that the value of distance is not too big and is sensible. A light year is defined as the distance travelled by light in one year.
A star is eight light years away from earth means that light from the star takes 8 years to reach the earth's surface. As shown above, its approximate distance from the earth is .
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| Question Text | Why is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth? |
| Answer Type | Text solution:1 |
| Upvotes | 150 |
