There are several ways of looking at this matter.
First, the black hole itself has an indeterminate size; we cannot know what the diameter is.
Second, the size would depend on the mass of the black hole.
Third, the only "size" (as in physical size) that might seem to have any meaning would be the size of the Event Horizon, which is much larger than the black hole itself might be.
Finally, we're not sure whether the question has any real meaning. Even Stephen Hawking is reconsidering the concept of "black hole" and he now says that black holes, as previously understood, do not exist. So the matter is up in the air.
Ask this question next year, and we may have more information.
At the center of a black hole is a mass that has collapsed to an infinitely dense point.
The center of a black hole, a locus of infinite density where matter is compressed into zero volume, is called a 'singularity.'
There is not a black hole at the center of the Canis Major constellation. Canis Major is a constellation in the night sky and does not have a physical center like a galaxy that could potentially contain a black hole.
The center of a black hole is called a singularity, where a huge amount of matter is crushed into a single point. That's scary, isn't it?
Perhaps you are confusing Universe with galaxy. Most galaxies have a black hole in their center. The Universe has no such thing as a center.
A big black hole.
no the galaxy is way to big for a black hole to do much in fact we now know that there is a supermassive black hole in the center of our galaxy right now.
A singularity is at the centre of a black hole.
Not all galaxies have a black hole at their center. Some galaxies, like our own Milky Way, do have a supermassive black hole at their center, while others do not.
The term black hole is a misnomer that implies the notion of a hole; there is no hole, so there is no end (or exit). A black hole is a spherical volume of immense density. Somewhat like the Earth, everything within its gravitational field is attracted to its essense. And just as pressure increases towards the center of Earth, the pressure increases on a more more dramatic scale towards the center of a black hole. However since the subsistence of a black hole is unknown, it might be said that the black hole ends in energy transformation.
No, the sun does not orbit a black hole in the center of our galaxy. The sun orbits around the center of the Milky Way galaxy, where there is a supermassive black hole called Sagittarius A.
It seems that just about EVERY galaxy has a huge ("supermassive") black hole in its center.
every galaxy got a black hole in the center even our galaxy, the milky way.
No. No black hole is big enough to do that.
It is believed that all galaxies have a black hole at their centers.
Most galaxies have a gigantic black hole in their center. The black hole in the center of our galaxy is estimated to have 4 million times the mass of our Sun. Some larger galaxies have black holes with billions of times the mass of our Sun. It is not yet understood how such a large black hole could form.
singularity