Maby the universe
I don't think that either of these stars "have" a black hole.
The quasar is bigger. A quasar is a disk of superheated matter that surrounds a supermassive black hole. The mass of the black hole may be greater than that of the disk, but it is compacted into a smaller space.
Yes. It's physically impossible for anything to be smaller than a black hole.
Black holes can be many different sizes. Therefore, there are some black holes that are bigger than the sun, and there are some that are smaller than the sun.
Yes. A quasar is a disk of superheated material that sour rounds a supermassive black hole.
Yes, a black hole is usually a star that has been compressed to a point where the density is really high.
First of all, our sun can not become a black hole, it is too small for that. However if a star is three times bigger than our sun, then yes it will become a black hole.
Yes, a galaxy is typically much larger than a black hole. Galaxies can contain billions to trillions of stars and vast amounts of gas and dust, while black holes are typically formed from the remnants of massive stars with a gravitational pull so strong that not even light can escape from it.
No, a black hole is a region of space with a gravitational pull so strong that nothing, not even light, can escape from it. Therefore, it is not possible for anything to have a greater mass than a black hole.
it is not large, it's not even bigger than an apple, but it is very dense
A black hole has more mass than a neutron star, but if you are comparing volume it would depend on the mass of the black hole. A neutron star is estimated to be about 14 miles in diameter, which is larger than the event horizon of a black hole up to about 3.8 times the mass of the sun. A more massive black hole will be larger.
There are hypotheses about so called 'virtual particles' that may travel faster than speed of light, and hence are not sucked up by Black Holes. Also, Black Holes cannot suck another bigger Black Hole, when they meet a bigger one, they get sucked up rather.