According to Einstein, an astronaut should not notice anything unusual as he crosses the event horizon; in fact, he shouldn't even know he's crossed it until later, when he begins getting spaghettified, or stretched like a noodle, from the
extreme gravity of the black hole's interior and realizes that even a light - speed escape attempt would do no good.
In fact, the only thing that made sense was that astronomers had witnessed what nightmares are made of: an entire star being literally torn apart by the
ferocious gravity of a black hole!
The other scenario is the «irruption model» in which a high speed black hole storms through a dense gas and the gas is dragged along by the
strong gravity of the black hole to form a gas stream.
A new NASA computer simulation shows that dark matter particles colliding in the
extreme gravity of a black hole can produce strong, potentially observable gamma - ray light.
Nineteen months ago, the immense
gravity of the black hole, which weighs in at about 4.3 million times the mass of the sun, was already squeezing and stretching the gas cloud as if it were pasta dough.
The gravity of a black hole swallows the matter around it.
The X-ray data also indicates that radiation from material surrounding this black hole has consistently surpassed the so - called Eddington limit, defined by a balance between the outward pressure of radiation from the hot gas and the inward pull of
the gravity of the black hole.
As the corona shifted closer to the black hole,
the gravity of the black hole exerted a stronger tug on the x-rays emitted by it.
The torus seems to have an asymmetry and the rotation is not just following
the gravity of the black hole but also contains highly random motion.
The stars appear warped due to the strong
gravity of the black holes.
The gravity of a black hole pulls swirling gas into it, heating this material and causing it to shine with different types of light.