Resizing planet

I have a model of a planet which I need to scale up 25 times - to 2500% its current size. The planet is in fact several different objects - one for the planet surface, two for the clouds and one for the outer atmosphere.

Although I am no pro, I am also no beginner and even though I have spent over 10 hours on this, I still have not figured out how to resize the planet so that the final image rendered by the camera stays the same - in my attempts, the atmosphere gets too bright, the surface details disappear, and so on.

It would mean a world to me if somebody more experienced could help me with this since it looks like I am at the end of my powers. I hate asking for help in the “do this for me” way, but I really don’t know what else to do.

The file is here: https://1drv.ms/u/s!AohDmDW98tXLkDWSrdVrn_XfMNdo?e=y37bSa

The objective is simple - to scale everything up 25x so that what the camera sees doesn’t change.

Many thanks in advance :slight_smile:

Hello, get file with scale https://drive.google.com/open?id=1scr4_6hY-dQGsybZ9E9kf8Jk3muU5owd

Many thanks for the help, @Marvin_Adams. Sadly, the file you sent gives a completely different result compared to the original file I was sharing - different lighting, no atmosphere, etc. The goal is to really have the same output, just to make the object within the .blend file bigger.

Original picture: https://1drv.ms/u/s!AohDmDW98tXLkDZG_gwNky8JP9aE?e=NxSYka
Your edit: https://1drv.ms/u/s!AohDmDW98tXLkDd8Re2AncTdrI5_?e=yGyn5q

Yeah, your scene is pretty messed up. You shouldn’t be scaling the camera or the lights. Those are graphics no-nos.

I understood the problem. The fact is that scaling has changed the power of lighting. Objects are bigger, they need more light. It is necessary to increase the power of light sources. I think several times. Try to increase the power of your light sources and everything will be fine.

@Marvin_Adams I have tried that, but never achieved the same result - either the atmosphere is too bright or the atmosphere falloff is bad, etc. I think there’s something else that’s causing the scene to look different at scale.

Excuse me. In your project, I discovered complex materials that may depend on the scale of the objects. Unfortunately, I can’t delve so deeply … Look for factors that depend on scale in the materials. You asked to increase the scale, I did it. Unfortunately, you need to reconfigure other parameters except the scale.

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In the end, I have figured out how to edit the nodes for the atmosphere, the clouds and the planet surface so that the result after scale is optically identical with the original. Thanks to everyone for their advice :slight_smile: