Normal? I just try random things and see what Bing comes up with. It's weird sometimes. Really, I understand why it's in bad taste, but I didn't mean for it to be. It had nothing to do with Tianamen at first, so I shouldn't have put the date as the title.
Nebulas are not perfectly round or spherical because they are affected by different forces that can cause them to be chaotic and irregular. Things like explosions from stars, magnetic fields, gravitational interactions with other objects, and radiation pressure can all factor in the way a nebula looks.
Yeah, I expected it. The image is just an unrelated prompt that Bing completely got wrong.