Anon you may be one of the lucky people blessed with such clear skies that you may just be noticing that, yes, there are lighter areas of ‘space’ that are visible. You may just have noticed the Milky Way. Can’t bring up a night sky simulation tonite for some reason.
Anyway see picrel. It’s moat noticed when you are looking thru our solar system, or across it tgru the densest part. Am guessing by your pics.