What effect do even thin clouds of dust have on light passing through them?

Question

Quizplus · Accepted Answer

Even thin clouds of dust can absorb and scatter the light passing through them, causing it to appear dimmer and redder. This reddening effect, known as interstellar reddening, is caused by the dust particles scattering shorter blue wavelengths more than longer red wavelengths. This effect can make distant stars appear redder and dimmer. Even thin clouds of dust can scatter and absorb some of the light passing through them, which can cause the light of more distant stars to appear dimmer and redder. This effect is known as interstellar extinction.

What Effect Do Even Thin Clouds of Dust Have on Light