the solar system is measured in what are known as light years
Light years
Earth is part of our solar system.
The unit used is usually the Astronomical Unit (AU), which is the average distance from the earth to the sun, and is approx 150 million km.
A "distance" must be specified between two objects. There is no "distance of the Solar System" by itself.
Any distance can be measured by any unit. It doesn't make a lot of sense to measure distances in light years, when it only takes light a few hours to make the journey within our solar system. Light goes from the Sun to Pluto in about 5.5 hours. Which is 0.00062 years, the assoicated distance being 0.00062 light years.
Inside our Solar System distances are measured in Astronomical Units (AU) which is the average distance from the Earth to the Sun, or about 93 million miles. Jupiter is about 5.5 AU distance from the sun or around 500 million miles. Distances outside our Solar System are usually measured in Light Years.
Anything outside of our solar system to anything within our galaxy.
Within our Solar System, Neptune, the furthest planet from the Sun has the greatest distance to travel.
It means the average distance from Sun to Earth. It is often used as a unit of distance, within the Solar System.
The Astronomical unit is used to measure the large distances in our solar system. It is roughly the average distance between the Earth and the Sun.
Distances within the solar system are expressed in terms of the distance between the Earth ans the Sun. This distance is called an astronomical unit (abbreviated as au), a unit of length now defined as exactly 149,597,870,700 meters or 92,955,807.3 miles).
AU - Astronomical Unit, but miles and kilometers are used for distances