The answer depends on the scale but the SI unit is a metre.
To measure the distance of stars you have to measure by light years.
Kilometres or miles.
Feet
I think Miles
Kilometers
distance
The meter, the SI unit for distance.
Angstroms
light years
The SI unit used to measure length or distance is the meter (m).
The standard measure for distance is the METRE
The unit that measures the greatest distance is a light-year, which represents the distance that light travels in one year. This unit is frequently used in astronomy to measure vast distances between celestial objects.
Kilometers are a unit of length, used to measure distance.
meter
Metre
the metre
Miles.