Photo date: April 29, 2018. Photographer: Mark Mahin.
The photo below shows a mysterious orb I photographed indoors. It is the tenth time I have photographed a mysterious orb with an inverted-Y inside it. You can see the other cases (mostly from 2017 and 2016) here.
This repeating pattern is one of 26 repeating patterns I have observed in mysterious orbs I have photographed. The visual below shows examples of each of these patterns, and how many occurrences of the patterns I have photographed. You can see many examples of each of these patterns by looking at this post.