# Is there anything bigger than a supermassive black hole?

These black holes, however, pale in comparison to supermassive black holes like Sagittarius A*, which reside in the heart of our Milky Way galaxy. It encompasses an area 14.6 million miles in circumference. That's around 168 Jupiters across, and it has the same mass as 4 million suns combined. This black hole has been studied extensively since its discovery in 1995.

Other black holes are found in galaxies other than ours. They range in size from a few hundred thousand kilometers across to more than a million kilometers. The largest known black hole is located in a galaxy called MCG-06-30-15. It has a mass equal to about four million solar masses.

Even though these objects are extremely large, they don't occupy much space because they're so heavy. The reason we know about them is because objects with such huge masses cause events that can be seen from far away. For example, when a star passes too close to a black hole, it gets torn apart by gravitational forces. Galaxies containing black holes often have very elongated shapes, which isn't the case for normal galaxies without black holes.

Black holes were first theorized by Albert Einstein in his theory of general relativity. He predicted that matter with enough gravity could collapse down into a small volume without outside influence. Today, most scientists agree that this is what happens when you cross the line between life and death.

## How big is a black hole in miles?

In the cores of several galaxies, black holes have also been detected. These black holes are extremely massive, containing the same amount of matter as 100 million or more suns. These black holes have a diameter of several million kilometers.

The mass of a black hole can be estimated from its velocity. For example, if I measure the speed of a star as half the distance between us and the galaxy, then the mass of the black hole at the center of that galaxy must be about five times the mass of the Sun. A black hole with this mass would have a radius of about 20 km.

## What are the different sizes of black holes?

The mass of a typical stellar-class black hole ranges between 3 and 10 solar masses. Most galaxies, including our own Milky Way Galaxy, have supermassive black holes at their cores. They are extremely heavy, weighing millions to billions of solar masses. Stellar-mass black holes are much lighter, only a few times more massive than the Sun.

Black holes come in three main sizes: stellar, intermediate-mass, and supermassive.

Stellar-mass black holes are those that lie within stars when they die. Their mass can range from about 5 to 80 solar masses. There are currently only five known stellar-mass black holes. They are all found within old, dying stars. One example is ERS 13390-2619, which has about 20 solar masses.

Intermediate-mass black holes have masses between 100 and 1000 solar masses. These objects are found within galaxies other than our own. Some examples include M82 X1, NGC 1275 X-1, and MCG -6-30-15 X-1.

Supermassive black holes are those that lie at the center of large galaxies, such as our own Milky Way Galaxy. They can weigh up to several million solar masses. Examples include Sgr A* at the center of our galaxy and M87 Jet in the center of the Virgo Cluster Galaxies.

## How many Earths can fit inside a black hole?

Sagittarius A is the name given to the supermassive black hole at the heart of the Milky Way galaxy. It has the mass of around 4 million suns and would fit within a very huge ball large enough to accommodate a few million Earths. This is because part of its power comes from the energy released as light due to the radiation pressure of stars that have been sucked in by its gravity.

A stellar nucleus is the term given to the core of a galaxy composed mainly of old, dead stars. It is usually surrounded by an extremely dense cloud of interstellar gas and dust which emits strongly in infrared wavelengths. This dust absorbs ultraviolet radiation from the hot young stars near the center and re-emits it at longer wavelengths, where we can see it with telescopes equipped with infrared cameras. Nuclear star clusters are regions within a galaxy where high concentrations of stars are found. They occur when a large number of stars are formed within a relatively small volume of space. These clusters are often very luminous, especially if they contain massive stars which evolve quickly and die young. The best example is the Orion Nebula Cluster which is one of the nearest and most accessible nuclear star clusters to our planet.

Nuclear stars are very bright objects that emit much ultraviolet radiation and therefore heat up their surroundings. This can lead to the formation of an accretion disk around them as they orbit through the galaxy.

##### Ruth Stuer

Ruth Stuer is a self-proclaimed spiritual, astrological and mindful person. She has been practicing for over two decades and loves all things related to these subjects. Ruth loves helping people find their personal spirituality through tarot card readings, chakra balancing and other practices that she offers.