GENERAL KNOWLEDGE

GK

BIG BANG THEORY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why are distances in space often measured in light years?
A
The light year is a commonly used unit of measure.
B
Light years are easy to measure and understand.
C
Distances in space are so great that a large unit is needed.
D
Scientists always use metric units like light years.
Explanation: 

Detailed explanation-1: -The astronomical distances are measured in light-years because, the speed of light is constant throughout the universe and is known to high precision.

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