How large are black holes?

stellar black holes were stars (these are large) primordial black holes were pieces of the big bang (these are microscopic)

Black holes are the result of the gravitational collapse of a large star.

Black holes. They can be so large that they can suck up universes at a time

Most black holes were once the cores of very large stars that collapsed.

Black holes are the result of a large star that has collapsed.

White holes are formed almost like black holes, from a large dead star.

There are supermasive black holes in the center of MOST galaxies, whether the galaxy is large or small. However, the black holes in larger galaxies also tend to be larger.

It is currently thought that there is a large black hole at the center of the Milky Way and many stellar black holes throughout the galaxy

According to leading theories, black holes may have any size, ranging from the subatomic to black holes many times the size of our Sun.

When two black holes collide, they will form a single (larger) black hole. In the process of colliding, they should emit gravitational waves in large amounts.

It seems that the largest known black holes have a mass of approximately 20 billion solar masses. Such black holes are found in the center of large galaxies.

Usually at the center of a galaxy or where a large star has exploded.

'Black holes' and neutron stars.

Black holes are black and white holes are white

The most massive black holes currently known (as of 2014) have a mass of about 20 billion solar masses. Those are supermassive black holes in the cores of large galaxies.

In simple terms, only the most massive stars have strong enough gravity to form black holes.

Most black holes are stellar mass black holes with masses comparable to those of large stars as they form from the collapse of massive stars. Scientists know of the existence of supermassive black holes that are millions to billions of times the mass of our sun and can be found in the centers of most galaxies. Scientists still do not know how these black holes become so massive.

The relevant magnitude is mainly the black holes' mass. Since black holes are the result of collapsing stars, yes, there are black holes with the mass of a star. The diameter is usually taken as the diameter of the event horizon. This diameter is directly proportional to the mass; a supermassive black hole such as Sag A* has a diameter comparable to that of a large star.

Anywhere where a large star stops shining. If the remaining mass, after the supernova explosion, is large enough, the star will become a black hole.

Scientists still are not sure why most galaxies contain supermassive black holes. One idea is that the first stars, which were very massive, formed smaller black holes when they died which then merged together. Another idea is that large clouds of gas at the centers of the proto-galaxies collapsed directly into black holes.

The Large Hadron Collider in CERN

Quasars are abnormally large black holes. They are not galaxies.

We do not believe that black holes exist inside the Earth. However, if the black holes were small enough, they would not be able to suck in large amounts of material, and would not grow quickly.

Well, there are two kinds of black holes. The normal black holes and the supermassive black holes. The supermassive black holes are a billion times bigger then our sun, while normal black holes are the same size as the Earth.

black holes can be formed in a supernova explosion if the mass of the star is large enough usually they are created when a massive and dense star like a neutron star collapses