"Sanny" schrieb im Newsbeitrag
...
Is a Black hole as big as Sun. Or it is as small as a Moon. Or just
the size of a FootBall.

Does a Black hole has a mass. And does it also have gravity. And Is it
as hot as Sun or very cool.

I heard Gravity is because a few elementary particle muon/photon
(Gravitons) are exchanged between mass.

Gravitons are the quanta of the gravitational field as photons are quanta of
the em-field.
But they do not create gravity as the photons do not create the em-field.

I don't think they'll find anything like that. But even if they were found,
they are not exchanged between masses. The reason is that not only masses
create gravitation. Any kind of energy content generates gravitation, even
gravitation. So anything with some energy inside should produce those
particles.

Thomas Heger