Question

Though it sounds like a measure of time, it's a measure of distance, about 32,000 round trips from the Earth to the sun.

a) Lightyear
b) Second
c) Kilogram
d) Watt

Answer 1

A light-year is a measure of distance that light travels in one year, approximately 9.5 trillion kilometers, and is used by astronomers to describe vast astronomical distances.

Step-by-step explanation:

The measure of distance you're asking about, which is equivalent to about 32,000 round trips from the Earth to the sun, is a light-year. A light-year is the distance that light travels in one year. Since light moves at a constant speed of 300,000 kilometers per second, it covers an expansive distance over a single year.

In numerical terms, a light-year is approximately 9.5 trillion kilometers, or 9.5 × 1012 kilometers. Despite its name, a light-year is not a measure of time but rather a measure of astronomical distances, which is crucial for astronomers when describing the vast expanse of the universe.