At the centre of our Galaxy, the Milky Way
No, it does not appear to have a giant cross. It is called a "Black" hole because it absorbs all the light that hits the horizon, reflecting nothing.
No, the black hole will swallow it because it's gravity is much stronger than the blue giant star.
Let me clarify one thing... Basically, ALL galaxies, or almost all of them, have a giant black hole at their center. (If any galaxy does NOT have such a supermasive black hole, then it is likely that it had one in the past, and that it was ejected out of the galaxy.)
A giant star that ends it life in a supernova
In the center of every galaxy there is a giant black hole.
Yes, you can get it in Route 13 and in the Giant Hole.
No really, no. A black hole does that.
quasar
The sun's energy has not formed a black hole.
Yes, a black hole is usually a star that has been compressed to a point where the density is really high.
It's not "galaxy stars", but galaxies, that have the black holes at their center.All, or most, galaxies have a giant black hole at their center.
a star dying in space that sucks everything into it.