This is the spherical cloud that was recently spotted above Fujisawa, Japan. Obviously, it's either a Death Star or alien related. Magic is also a real possibility. Remember: the simplest answer is often the right one.
Some climate experts commented that this cloud probably falls under a "roll cloud" category. It "forms under wind created from a 'mountain wave' (or airstreams going over mountains) on a windy day". According to Wikipedia "roll clouds are formed by outflows of cold air from sea breezes or cold fronts."
That doesn't look like any roll cloud to me, and I've seen my fair share of roll clouds. Mostly just right now on Google Images. I do my research. "You're reading erotic dinosaur fan fiction." Nobody ever questions Sherlock Holmes about his methods.
Keep going for one more shot.
Thanks to Allyson S, who informed me geometric clouds are a sign of the endtimes which is why I just sold everything I own to travel until the world explodes.