Super Novas & Nebulas are different critters (Score 3, Interesting)

The way I understand it, a super nova would explode like a nuclear bomb in the air, that is, in all directions, so shoulded the upper right image be the correct one? Nebulas are like the foreground objects, often like wisps of fog. They are either the birthing ground of stars or a _long_ ago remnant of a super nova.