Black holes can be a lot smaller than galaxies in terms of physical size, but they have immense mass and gravitational pull. Galaxies, on the other hand, can be vast collections of stars, dust, and other celestial objects that span thousands of light-years. So, galaxies are typically larger in physical size compared to black holes.
An intermediate-mass black hole is one that has a mass somewhere between 100 and a million solar masses, i.e., larger than the stellar black holes, but smaller than the supermassive black holes. It seems likely that such holes should exist, but the observational evidence is not yet very firm.An intermediate black hole is one whose mass is somewhere between that of a stellar black hole (a few times the mass of the Sun), and that of a supermassive, or galactic, black hole (millions or billions of times the mass of the Sun).
Intermediate black holes are thought to be black holes with masses ranging between stellar-mass black holes and supermassive black holes. They are hypothesized to form through various means, such as the merging of smaller black holes or the direct collapse of massive stars. Their existence is still being actively researched and studied by astronomers.
A black hole can be smaller or much larger than a solar system. The size of a black hole is determined by its mass, which can vary greatly. Some black holes are only a few times more massive than the Sun, while others can have masses millions or even billions of times greater.
There are more white dwarfs than black holes in the universe. White dwarfs are the end stage of low to medium mass stars, while black holes are formed from the remnants of massive stars. Since low to medium mass stars are more common than massive stars, there are more white dwarfs in the universe.
The masses of black holes vary greatly. The lowest mass stellar black holes are about 3 times the mass of the sun. The most massive black holes are about 12 billion times the sun's mass.
Black holes can be a lot smaller than galaxies in terms of physical size, but they have immense mass and gravitational pull. Galaxies, on the other hand, can be vast collections of stars, dust, and other celestial objects that span thousands of light-years. So, galaxies are typically larger in physical size compared to black holes.
An intermediate-mass black hole is one that has a mass somewhere between 100 and a million solar masses, i.e., larger than the stellar black holes, but smaller than the supermassive black holes. It seems likely that such holes should exist, but the observational evidence is not yet very firm.An intermediate black hole is one whose mass is somewhere between that of a stellar black hole (a few times the mass of the Sun), and that of a supermassive, or galactic, black hole (millions or billions of times the mass of the Sun).
Intermediate black holes are thought to be black holes with masses ranging between stellar-mass black holes and supermassive black holes. They are hypothesized to form through various means, such as the merging of smaller black holes or the direct collapse of massive stars. Their existence is still being actively researched and studied by astronomers.
Yes. Most, of a galaxy's mass is stars and nebulae, not black holes.
A black hole can be smaller or much larger than a solar system. The size of a black hole is determined by its mass, which can vary greatly. Some black holes are only a few times more massive than the Sun, while others can have masses millions or even billions of times greater.
A star that stops producing radiation, with a mass about 2-3 times the mass of our Sun (mass remaining after a possible supernova explosion), or more, can become a black hole. There is also some speculation about miniature black holes ("primordial black holes"), with much less mass than that, which might have formed during the Big Bang, because of the enormous density that existed at that time. However, so far there is no evidence that such black holes actually exist.
There are more white dwarfs than black holes in the universe. White dwarfs are the end stage of low to medium mass stars, while black holes are formed from the remnants of massive stars. Since low to medium mass stars are more common than massive stars, there are more white dwarfs in the universe.
They will gradually evaporate, due to Hawking radiation. At the current stage of the Universe, black holes of the mass of a star will acquire mass much, much faster than they evaporate - even if they only absorb the background radiation. In the far, far future, such black holes can slowly evaporate.
It depends on the mass of the black hole. The size of the event horizon is directly proportional to mass. Most black holes are what we call "stellar mass" black holes which range from about 3 times to 30 times the mass of the sun. The event horizon of a 30 solar mass black hole would be about 110 miles in diameter. Earth, by comparison, is just over 7,900 miles in diameter. An intermediate mass black hole about 1,340 times the mass of the sun would have an event horizon about the same size as Earth. Astronomers have detected supermassive black holes up to 12 billion times the mass of the sun. Such a black hole would have an event horizon 44 billion miles across, or about 5 times larger than the orbit of Pluto.
Technically yes, realistically, probably not. The best measure of the size of a black hole is the size of the event horizon. That we know of, black holes fall into two general categories: stellar mass black holes and supermassive black holes. The diameter of the event horizon is directly proportional to the mass. Stellar mass black holes range in mass from about 3 to 30 times the mass of the sun, with diameters several miles to several tens of miles. Supermassive black holes are millions to billions times the mass of the sun and are millions to billions of miles across. A black hole with roughly the mass of Saturn would have an event horizon about as wide as an adult human is tall, but there is no known way for an object of that mass to become a black hole.
No, the Sun is much heavier than the Earth. The Sun's mass is about 333,000 times greater than the Earth's mass.