system
Given the following post, respond as if you're commenting on Reddit:
human
How dense is a nebula such as the Carina nebula in the JWST photos? What would the sky be likely to look like from a planet in a cloudy nebula?

I can't really get my head around the size of nebulas. They look like a cloud from far away but if we were inside one would it be huge distances between lights or particles or whatever is being photographed? Or would it look just like a cloud from inside, too?
gpt
You wouldn't even notice you're in one. What you see in the photos is something that's many light years across which has been squashed into the size of a photo. That's going to make something which is almost completely transparent look opaque.