When stars die or when they are first being formed, they are Red Giants.
When low-mass stars die, they become red giants and then collapse into white dwarfs.
When bigger stars die, they have more mass, and collapse further than white dwarfs and the pressure is enough to start fusion of heavier elements, and the explosion of energy from that gives you your supernova. What's left afterwards is a nebula and a neutron star.
When REALLY big stars die, you get the same thing, except instead of a neutron star, you have a black hole. And a bigger nebula.
Just in case that clears anything up...If the cutscene WAS showing a black hole next to a red giant, a common occurance, then I guess it means that there was a supernova in the area, but a very, very, very long time ago. Billions of years sort of thing.
Oh yeah- REAL nebulas aren't like pea soup. You probably would barely be able to tell you were in one. It would obscure vision, but only VERY slightly. If there was a real nebula like in FS2, it would probably actually be a protostar, where the dust is starting to gather to form a star, but isn't dense enough to have started any reaction.
Just throwing this out on the off chance it helps.
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