Only stars that are much more massive than our sun can become a black hole. When the star dies, it explodes (called a supernova) and then gravitational collapse helps it to form a black hole.
High-mass stars might become black holes, if the remaining matter (after the supernova explosion) is sufficiently large.
The star must be fairly massive. The large majority of stars won't become black holes. The condition to become a black hole is that what remains of the star after the supernova explosion must have at least a certain mass, something like 2 times the mass of our Sun.
specifically, "astronomers" that study black holes are called cosmologists.
There are two kinds of "dead" stars. One, called "brown dwarfs," even though they're actually dull red, are "dead" through not being able to fuse hydrogen into helium. They generate heat through their gravity, as Jupiter does. The other kind are the remnants of supernovae, which include white dwarfs, neutron stars and black holes. The first two of these aren't dead in the same sense as brown dwarfs, since they still radiate from fusion. Black holes and dead (except for gravity) because the matter at their hearts has become so compressed, it's been "pulled out of the universe" an occupies no space at all.
Supernova explosions are believed to generally result in a black hole, as the core of the star is collapsed into an unimaginably dense point mass. One can't really say that a black hole is any kind of star. Less powerful nova explosions probably result in pulsars or neutron stars.
technically, we do not know whether black holes are real. theoretically, they are completely possible. scientist believe that they have seen on but are not sure. if real, the largest one originate from larger stars
It is a tricky question because black holes are invisible, but scientists know that they are exist because black holes distort light, so it kind of change the light and also it sucks everything into it, so when scientists see stars starting to disappear, thats mean there is a black hole.
It is a tricky question because black holes are invisible, but scientists know that they are exist because black holes distort light, so it kind of change the light and also it sucks everything into it, so when scientists see stars starting to disappear, thats mean there is a black hole.
There are various types of stars, such as main sequence stars (like our sun), red giants, white dwarfs, neutron stars, and black holes. These stars differ in size, mass, temperature, and lifespan. They are classified based on their characteristics and the stage of their evolution.
There aren't dogs or cats there either. Neither of those things is a star. A nova isn't a type of star, it's an event happening to a star (kind of like a solar flare or a sunspot, except on a much bigger scale).
Black holes are believed to emit something called Hawking radiation.
Black holes emit a form of energy called Hawking radiation, which consists of particles being emitted from the black hole's event horizon. This radiation causes the black hole to slowly lose mass over time.