Help With 3D Atmosphere

Hi, so I am trying to create a 3D atmosphere system (kind of like to Pularnova’s 3D Atmosphere) for my space game where the higher up you go, the more the sky starts turning into space (until it disappears completely)

I’ve tried using a really large inverted sphere mesh as a “sky” dome while setting the time of day to 0, but since it is still night behind the dome, everything is still kind of dark and shadowed (I’ve set the Brightness property in Lighting to 15).

I’ve also tried just tweening the time of day to night when the player reaches a high enough altitude, but that creates a sunset effect. I’ve tried it with other skyboxes (this is the default Baseplate one), but it still creates an effect like that, just more purple.

Does anybody know how to fix this or know of any better ways to make the atmosphere?