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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.
What else can I help you with?
How were black holes created?
Black holes are created from something extremely dense in a small space. The most common cause is a supernova.
Why small Black Holes?
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Are there galaxies with no supermassive black holes?
It is currently believed that most, if not all, galaxies contain supermassive black holes at their centers. These black holes can vary in size, with some being relatively small and inactive. However, the presence of supermassive black holes in galaxies is a common feature in the universe.
What is so small and massive that the gravity does not even let light escape?
Black holes - and not all are small.
How large are black holes?
Theoretically they can be as large as a small star or as large as a galaxy
What is a black holes atmosphere made out of?
Black holes have no atmosphere, they are entirely empty except for a singularity at the very center containing the entire mass of the black hole in one infinitesimally small point (or if the black hole is spinning, one circular spinning ring of infinitesimally small thickness).
Is the lhc going to make a black hole?
One of the LHC's objectives is to create micro black holes. These holes are so small however, they evaporate into radiation almost immediately.
What are the characteristics and potential implications of primordial black holes in the universe?
Primordial black holes are theoretical black holes that could have formed in the early universe. They are thought to be small and have a wide range of masses. If they exist, they could have implications for dark matter, gravitational waves, and the evolution of the universe.
What is the current scientific understanding of the formation and characteristics of primordial black holes?
Primordial black holes are thought to have formed in the early universe due to fluctuations in density. These black holes are believed to be small and have a range of masses. They are not formed from the collapse of massive stars like regular black holes. Primordial black holes are difficult to detect because they do not emit light. Scientists are still studying these mysterious objects to better understand their formation and characteristics.
How dense are black holes?
Black holes are extremely dense, with a mass packed into a very small volume. This high density creates a gravitational pull so strong that not even light can escape from them.
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)
Is dark matter excreted from black holes?
No. Black holes do not give off anything other than small amounts of Hawking radiation. That note aside, scientists do not know what dark matter is or what its origin is.
