Question

The change in the color of star light as it passes through interstellar medium is called interstellar A) reddening B) extinction C) prism D) sunset E) twilight

Answer 1

A. Reddening

Step-by-step explanation:

Interstellar is the space filled in between the stars. It contains gas particles and dust.

The dust consist of microscopic particles, having wavelength of blue light waves hence the most amount of color that comes out is the red color.

So when the star light passes through interstellar medium it is called as interstellar reddening.