I think I've seen this (or something like it) on a conspiracy theory debunking site not long ago. Their best guess was that the "sphere" is a flux tube viewed end-on.
I have a bad feeling about this........weird looking phenomenon whatever it was.
https://www.metabunk.org/threads/debunked-giant-black-sphere-hovering-near-the-sun.469/
Seems the most plausible explaination (a cornal cavity).
Now all we need is a planet sized tooth brush and a **** load of fluoride!Seems the most plausible explaination (a coronal cavity).