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Black holes are made just before a star dies. The stars core radiates outward pressure to balance out the gravity pushing down on it. When the cores energy runs out gravity gets the upper hand and compresses the star. As the star gets compressed the core heats up and implodes and swallows itself. The bigger the star the more gravity there is acting upon it meaning a bigger black hole.

If the star is made of tougher stuff it becomes a white dwarf or a neutron star. Hope this helps!

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13y ago
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5mo ago

Black holes are formed when massive stars collapse under their own gravity at the end of their life cycle. The size of a black hole is determined by its mass, and they can range in size from a few times the mass of the sun to billions of times the mass of the sun.

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Q: How are black holes made and how big can they get?
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What have black holes got to do with the beginning of the universe?

The density of matter just after the big bang is calculated to be sufficient to have spontaneously created black holes; such are called primordial black holes, and searches for their existence are ongoing.


Is the universe being consumed by the galactic black holes?

Even though black holes suck through parts of the universe, the universe is inevitably big, and growing so as the universe is being sucked into another dimension by black holes, it is also expanding.


What if black holes are actually planets with an atmosphere that does not reflect back any light?

Black holes aren't actually holes, they're just humongous 'objects' that are so big that they have huge gravitational pulls and therefore pull everything into themselves, hence the name 'holes'.


Is the amount of black holes in the universe relatively increasing and are the consequences of this a new creation big bang?

The amount of black holes are increasing because the fact that stars are dying and being reborn each second.


Can black holes dies?

Black holes do not die but they can evaporate.

Related questions

What were black holes before they turned into black holes?

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


Will the big bang make a black hole?

no black holes are stars


Is the universe made of black holes?

No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.No. It certainly has black holes, but it has other things as well.


Did you make black holes yet?

Black holes (in the astronomical sense) have never been made in the laboratory.


What have black holes got to do with the beginning of the universe?

The density of matter just after the big bang is calculated to be sufficient to have spontaneously created black holes; such are called primordial black holes, and searches for their existence are ongoing.


When was the Why are black holes dangerous answer made?

2010


Why all dead big stars do not form black holes?

All dead big stars do not form black holes because sometimes the collapse of the star is stopped at a smaller size before it becomes a black hole.


How did Dr. Stephen Hawking discover black holes?

He did not. He made some theoretical discoveries about how black holes would probably behave; but the concept of black holes was discovered by others before him.


Is there any chance of life in a black hole?

stellar black holes, no none at allhawking black holes, no none at allsuper massive black holes at galactic centers, no none at alluniversal black holes, yes we are an example, if the entire universe is indeed inside an ultra massive black hole as would be suggested by the combination of big bang theory and black hole theory


Is the universe being consumed by the galactic black holes?

Even though black holes suck through parts of the universe, the universe is inevitably big, and growing so as the universe is being sucked into another dimension by black holes, it is also expanding.


Is there such thing as big black holes?

While scientists have never actually SEEN a black hole (they are called "black holes" because their gravity is so great that not even light can escape!) we believe that super-massive black holes are at the hearts of most galaxies. These super-massive black holes might be the mass of a million stars the size of the Sun, or larger.


What is the connection between big bang theory and the blackhole?

One of the considerations for the eventual termination of the universe is that all matter will be pulled into black holes, and then these black holes would eventually evaporate.