* Light-years: While light-years are a common measurement for vast interstellar distances, they are far too large to be practical for measuring distances within our solar system. A light-year is the distance light travels in a year, which is roughly 6 trillion miles (9.5 trillion kilometers).
* Astronomical Units (AU): The standard unit of distance within our solar system is the Astronomical Unit (AU). One AU is the average distance between the Earth and the Sun, which is about 93 million miles (150 million kilometers). Pluto's average distance from the Sun is about 39.5 AU.
* Other Units: While light-hours might be used in some scientific contexts, they are not the primary unit used for the Sun-Pluto distance. Other units like kilometers or miles are also used depending on the context.
Why light-hours aren't used:
* Scale: Light-hours are too large for the relatively small distances within our solar system.
* Practicality: Using light-hours would require awkward and cumbersome numbers for expressing distances within our solar system.
Therefore, while light-years are valuable for measuring immense distances, they are not the standard unit for measuring the distance between Pluto and the Sun.
