The gas is dragged along by the strong gravity of the black hole to form a narrow gas stream. (sciencedaily.com)
The immense gravity of these black holes drags material toward them, forcing the material to heat up and release powerful X-rays. (sciencedaily.com)
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. (sciencenews.org)