cosmic dust

Noun

uncountable

Dust which exists in outer space or has fallen from outer space to Earth.

Japanese Meaning

宇宙空間に存在する埃、または宇宙から地球に降り注いだ埃

After the meteor shower, scientists found traces of cosmic dust on the mountain snow.

流星群の後、科学者たちは山の雪から宇宙塵の痕跡を見つけた。

Sense（1）

Dust which exists in outer space or has fallen from outer space to Earth.