light-year
The term 'año luz' in Spanish translates to 'light-year' in English. It is a unit of astronomical distance equivalent to the distance that light travels in one year, which is approximately 5.88 trillion miles or 9.46 trillion kilometers. This concept is often used in astronomy to describe vast distances between stars and galaxies.
The light year is a measure of distance that astronomers use.
This sentence explains that a light year is a term commonly used by astronomers as a way of measuring distance, though it's based on the concept of how far light travels in a year.
It would take us 4.22 light years to travel to the star nearest to us.
This sentence explains that in terms of space travel, the nearest star to Earth is 4.22 light-years away, using 'light-year' as a measure of the vast distances involved in space exploration.
In just one second, light can travel nearly 300,000 kilometers, which is approximately one ten-thousandth of a light year.
This sentence explains the speed at which light travels by indicating that it can cover nearly 300,000 kilometers in one second, which constitutes a very small fraction of a light year.