What is the unit of measurement of very long distances between celestial bodies?

Correct option is D

The correct answer is (d) Light years.
· A light year is the unit of measurement used to express very long distances between celestial bodies, such as stars, galaxies, and planets. It represents the distance that light travels in one year, which is approximately 9.46 trillion kilometers or 5.88 trillion miles. This unit is commonly used in astronomy because the vast distances in space are not practical to express in smaller units like meters or kilometers.
Information Booster:
Light Year: Used to measure astronomical distances beyond our Solar System.
Other Units:
· Astronomical Unit (AU): Used to measure distances within the Solar System. 1 AU is the average distance between the Earth and the Sun (~150 million kilometers).
· Parsec: Another unit used in astronomy, equal to about 3.26 light years.