Term: Noble gas, Description: group of chemical elements tend to be chemically inert and thus form odorless, colorless, monatomic gases with low reactivity; consists of helium, neon, argon, krypton, xenon, radon, and possibly oganesson, Question: Was the Japanese street aesthetic once illuminated by noble gasses?, Answer:Yes
Fact1: Japan was known for their use of brightly lit businesses and signage. Fact2: The signs in Japan were lit with neon for a long time. 