I was out in my minecraft world today when I noticed a small fire in the sky. So I turn on fly mode to investigate and it turns out to be some weird orb in the sky. I can't touch it - I just fly right through - and I can't hit it with anything either. And then I found a second one! I have no idea what the heck they are and I've never heard of them either. Does anyone know what they might be?
I know that if you log out of a world while a Ghast fireball is in motion, then they will freeze in position permanently when you reenter the world. However, those frozen fireballs should be able to be interacted with, so it's strange that you can't do so with those two. Very strange.
Are you sure that they aren't graphical glitches? Are they really there, or are they just leftover graphics from entities that no longer exist?