Solar System 2.0

I have adjusted  comet spawners and added rotation so they don't projectile the same way. I have switched the render setting from built in to URP, accordingly adjusted the materials for the new render method. I upgraded the sun with VFX so it looks more realistic. I have added four new planets: Mercury, Venus, Mars, and Jupiter. I have added an exit button, and minimap boarder. I adjusted the sounds so the sound more realistic (especially the passing comets). I removed directional light, but intensified the sun light, so the setting looks more like in the space. I have replaced the skybox texture.