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I made a scene with a spaceship, I did put a sun light inside of the spaceship, but the light brightens just the outside, even if the light is inside it doesn't brightens the interior.I already tried with point, spot and area lights; and to flip normals but no result. Material preview inside spaceship enter image description here Render preview inside spaceship enter image description here Render preview outside spaceship (the light just work in the exterior enter image description here Face orientation enter image description here Can someone help me?

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  • $\begingroup$ So is the main issue getting light through a Glass BSDF? $\endgroup$ Jun 16, 2021 at 1:46
  • $\begingroup$ It was what Dale said. I need to study more before doing posts; just wasted other people time. mb guys. $\endgroup$ Jun 16, 2021 at 3:41
  • $\begingroup$ No worries, @MichaelNich! This site is meant for asking questions. $\endgroup$ Jun 16, 2021 at 4:29

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From the Blender docs:

A sun light provides light of constant intensity emitted in a single direction from infinitely far away.

https://docs.blender.org/manual/en/latest/render/lights/light_object.html

The sun light's position doesn't matter, only the direction and size. You therefore cannot put a sun light inside anything. You need to use a different light type.

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  • $\begingroup$ Also he has to use cycles as the eevee doesnt let the light throu glass shader. If you use cycles rendering and put there a sun your interior will be lighted by it. $\endgroup$
    – Fowl
    Jun 16, 2021 at 6:02

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