fro science astronomical units are used.BUt we use light year as a unit of science for distance
The basic unit of distance is meter. Other units are km , cm , mm.
metre
By unit of length and distance and conversion ,we can say that SI basic unit of length is meters.
By unit of length and distance and conversion ,we can say that basic SI unit of length is km .
The basic metric unit is the metre.
By unit of length and distance and conversion ,we can say that the basic unit for length is meter ( m).
The meter.
meters
distance
the metre
Metre
Distance is measured metrically in meters
In science, the basic unit is the meter/metre. Meters, centemeters, foots.Meter.