Question:
If it's not fluff on the lens or a problem from the cameras end, then it can't be space junk can it?
What can possibly survive those temps in close Sun orbit?

I don't think there's a material on Earth that can be used to build and sent a probe that could withstand the Sun is there?

If Aliens can navigate between Galaxies and or dimensions, wouldn't they have the tech to learn all they need about The Sun from a distance?

I know there's likely material out there that we know nothing about but why would you want to be that close to a Sun as a sentient?

If not anomalies then possibly probes or highly irregular shaped unknown material space junk?

Are they firing lasers at the Sun to cool it an bring on this new mini ice age?

(That last one is very tongue in cheek)