I made the moon to collide against the moon and here's what I got
This is a distortion effect that doesn't get cleaned up properly. We're in the middle of a complete refactoring of collisions and their effects, so this probably will go away (and undoubtedly others will emerge).
I messaged Dan about it...
Don't PM me about bugs like this, posting them in the forum is enough.
Now lock this thread, please.
We don't lock threads. Stop telling others what to do.
You keep forgetting words that need to put in your sentences.
And stop correcting other people's English in a rude way... his English is undoubtedly better than your Itallian so relax.