I would use meters because well thats the only other choice to choose from!
The parsec is 3.26 light years. Astronomers measure distances to remote galaxies in megaparsecs--millions of parsecs. This is about the longest commonly used length metric.
The term for measuring long distances in the metric system is kilometers.
meters or kilometers.
Kilometers
kilometers
You measure long distances with miles.
You measure long distances with miles.
The metric system is used to measure distance in Brazil. Distances are typically measured in kilometers (km) and meters (m).
For long distances, kilometers are used. A kilometer is about 0.6 miles.
metric system is for commies
It depends on what you are trying to measure. Long distances usually are measured in miles. Survey distances usually are measured in feet.
You don't, miles are not a unit in the metric system. All distances are measured in metres. Prefixes are used for multiples or fractions of a metre. Distances that used to be measured in miles would, today, be measured in kilometres.