interstellar extinction

uncountable

(astronomy) the dimming of light from the stars due to absorption and scattering from dust in the interstellar medium

Japanese Meaning

星間物質中の塵によって吸収及び散乱が起こり、星の光が薄れる現象

When measuring a star's intrinsic color, astronomers must correct for interstellar extinction to avoid overestimating its temperature.

星の本来の色を測定する際、天文学者は星間塵による吸収や散乱で生じる星間消光を補正しないと、その温度を過大評価してしまう。

Sense（1）

(astronomy) the dimming of light from the stars due to absorption and scattering from dust in the interstellar medium