At the centre of our Galaxy, the Milky Way
A red giant cannot survive a black hole if it comes too close due to the intense gravitational forces. The black hole's gravity would likely disrupt the red giant, leading to tidal forces that can tear it apart. If the red giant were to cross the event horizon, it would be irreversibly drawn into the black hole. However, if it remains at a safe distance, it could exist alongside the black hole without direct interaction.
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
No really, no. A black hole does that.
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.
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.