50 lightyears equals 473,036,523,629,039,979,224,629,248 nanometers.
Convert 50 lightyears into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, inches, feet, yards, miles, hands, astronomical units, parsecs, etc...
Convert 4.7303652362904E+26 nanometers into meters, kilometers, decimeters, centimeters, milimeters, micrometers, picometers, inches, feet, yards, miles, hands, astronomical units, parsecs, etc...