No. Earth was formed by the accretion of material in the protoplanetary disk around the newly formed sun. Black holes were not involved.
Yes. Our galaxy has a supermassive black hole at its center and likely millions of stellar mass black holes scattered throughout.
Most or all galaxies appear to have supermassive black holes at their centers and probably have stellar mass black holes scattered throughout.
It is currently believed that all spiral galaxies have a supergiant black hole at their centers and all galaxiesand globular clusters have several ordinary black holes scattered throughout them.
Currently, most astronomers believe there is probably a large black hole at the center of most, if not all, galaxies, including ours. There are also probably many smaller black holes scattered throughout.
Our galaxy contains a supermassive black hole at the center and probably several million stellar mass black holes scattered throughout.
Black holes can technically be any where. Some scientists believe that there is a black hole in the center of our galaxy along with many other galaxies. Because black holes are so difficult to detect, they can be very dangerous.
The galaxy was formed from the attraction of stars which in our galaxy orbit a massive black hole.
Black Holes are scattered throughout the cosmos. It is theorised that there are supermassive black holes at the centre of galaxies such as ours (The Milky Way).
Sorry, you missed it by about 13 billion years. It already formed at the center of the galaxy.
The theory of a black hole and galaxies is that a black hole created a galaxy or was formed by a galaxy, if that makes sense.Eventually, our solar system will get sucked in. But this will happen in about over a billion years!add. For such a size of black hole, the timescale would be in the billions of years. But before which our Sun would have overwhelmed our Earth in its Red Giant phase.
Black Holes end up producing large quantities of gamma rays throughout their lives. This is one of the processes that lead to a Black Hole's demise.
A galaxy is bigger than a black hole.