Yes.
> I'm not sure how dense it gets, but would someone even notice if they were inside of the nebula?
https://physics.stackexchange.com/questions/26326/how-dense-...
(Google is your friend.)
Yes.
> I'm not sure how dense it gets, but would someone even notice if they were inside of the nebula?
https://physics.stackexchange.com/questions/26326/how-dense-...
(Google is your friend.)