Thanks

The answer depends on several things (what atmosphere model you're using, what atmosphere settings, what light model, etc). For example, the solution for standard atmosphere is very different than from spectral. Assuming it's spectral, maybe you don't have enough haze and/or have too much glow intensity and/or the haze is of a too bright color. If this is the case, it should be solved in the "Sky, Fog, Haze" tab of the atmosphere setting. Increase the haze (you may have to change its altitude) and/or darken its color and/or decrease the glow intensity and see it if solves. If it doesn't, give us more details of your settings.