it is bob
There is no definite boundary for matter not being pulled toward a black hole. At large distances the effects of a black hole's gravity are not different from that of a different object of the same mass. How far out a black hole's gravity is dominant depends on that black hole's mass and its proximity to other massive objects.
It doesn't work like that. A black hole doesn't expand, unless its mass increases, i.e., when additional matter falls into it. And there is no place where its gravitational pull stops - the gravitational pull goes all the way to infinity (just as in the case of any other mass).
thermal expansion
It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.
That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.That's because the Universe really is expanding. It started as a "big bang", where all the matter and energy in the Universe was concentrated in a tiny space, smaller than an atom - at a tremendous temperature and pressure. From there it started expanding, and continues expanding to this day.
The ergosphere is an oblate spheroid region outside of the event horizon, where objects cannot remain stationary. While objects and radiation can escape normally from the ergosphere, there is still gravitational frame dragging of matter which is orbiting a black hole. Note: Think of the black hole's ergosphere area being like the Earth's graviational influence area of Low Earth Orbit.
Gas is one of the states of matter. Matter has weight and takes up space. When rocket propellants are burned or oxidized, they give off expanding gases. Since gas is matter the expanding gases exert force.
I have a better question... You said you stopped talking to this guy because you couldn't trust him. What makes you think you can trust him now? Or does trust no longer matter to you?
No such cosmological model exists. What you relate e is one description of Big Bang Cosmology (BBC), but that description is WRONG. BBC does NOT postulate that matter is expanding from a small, dense blob into empty space; rather, it describes a Universe in which SPACE ITSELF is growing at a (more or less) steady rate. Matter density is not decreasing in the way that ink density decreases as it expands into a large container of liquid; rather, the density of matter is decreasing because space is expanding as the amount of matter remains the same. Also, space is not expanding into anything, like an exploded material expands into the space around it. Space is just expanding, period. It is difficult to visualize, but the math works out just fine.
It is not exactly expanding into anything. The galaxies are moving apart from each other, from which we can infer that the universe is expanding. Theoretically, this is a result of the Big Bang, in which the universe began when all matter was compacted into a very tiny sum, and then exploded apart in a very big bang, and as a result is still expanding today.
The answer is that the expansion of the universe is only noticeable over distances of hundreds of millions of light years or more. Over the much smaller distances found within galaxies and planetary systems its effects are negligible.
Plasma