Due to the dust in the interstellar medium, a distant star will appear to an observer on Earth to be
A)brighter and cooler than it really is.
B)brighter and hotter than it really is.
C)fainter and cooler than it really is.
D)fainter and hotter than it really is.
E)unchanged in brightness or apparent color.

Question

Quizplus · Accepted Answer

Dust in the interstellar medium absorbs and scatters light, making distant stars appear fainter. The scattering is more effective at shorter (bluer) wavelengths, making the star appear redder (cooler) than it actually is.

Due to the Dust in the Interstellar Medium, a Distant