Need help finding a subreddit to post this/these in

Help please... I cannot find answers on Google & now I can't find the perfect subreddit...

What am I looking at in space??? These are screenshots I just took from my phone on the Stellarium app. I found very few articles/pages about this large, round blue thing... BUT... I've found nothing on these parallel blue lines OR this long, brown rope thing in space!!

Sorry, I thought I'd be able to post the photos.