millimeters, centimeters, meters, kilometers, miles, yards, feet, inches,...
metre
Fathoms I think.
There area many units used for measurement of the distances .But , the S.I unit od distance is meters ( m ) .
light years
Lightyears and miles
Meters and Kilometers
It depends on what it of distance is being used. A million million kilometres is 6684 astronomical units, which is the distance travelled by light in 3.3 million seconds, or 5½ weeks.
Light year or astronomical units
For measuring length/distance, meter is used. Other units are km / cm/ mm.
There are two main units of distance used for measuring space distances, they are solar units and light years
In olden days, they were used for measuring mass, distance and volumes. Nowadays, these units are not used in science anywhere in the world except in the US.
The official (international) unit for energy is the joule. Other units frequently used include the calorie, the electron-volt. In general, by the definition of work (which is basically energy) as force x distance, any product of units of force and distance can also be used, for example the foot-pound.