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What is so small and massive that its gravity does not even let light escape it?
Wiki User
∙ 12y ago
Your category is the answer, that thing is black hole
Wiki User
∙ 12y ago
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If gravity waves travel at the speed of light and black holes' escape velocity is much greater than the speed of light then how can gravity waves escape a black hole?
Gravity is not a 'wave', it is a field of curvature of space-time caused by objects with mass. A black hole contains the mass of a star, compressed to the space of a single atom (a singularity), the compression of so much mass into such a small space, is why the black hole has such a powerful gravitational pull.
Does regular planets have weak gravity?
Generally speaking, the bigger or more massive a planet it, the more gravity it has, since gravity and mass are related. the small planets such as Mars and Mercury have a weaker gravity, while the larger planets have a strong gravitational field.
What are small amounts of gravity called?
small amounts of gravity
How does a black hole act as a vacuum cleaner?
It technically doesn't, given that a vacuum cleaner works via air pressure differences, and space is mostly a vacuum already. What it does do, is by an enormous amount of mass focused in a small point, create a very strong gravity field, to the point that even light cannot escape a certain proximity. This is known as the 'event horizon'. Basically, nothing we know of that crosses that line can escape the gravity, drawn into the singularity at the center.
Why can't light escape from black hole?
no because black holes are so amazingly dense that nothing can escape. also that when something enters a black hole the denseness automattically crushes it after it sucks something in like a vacuum.No. That is how a black hole is defined.Real Answer: Once light crosses what is called the event horizon (Point of no return even if your traveling at the speed of light ) 3.2 x 10^8 m/s , that 3.2 with the decimal moved to the right 8 times meters per second.meaning it gets close enough so that the inward force of gravity that the black hole produces (unfathomable) creates a verticle velocity of the speed of light and bends the light inward into the black hole where it never escapes. Or you could say that it creates an enormous inward horizontal gravity force that will bend that light because as E=mc^2 explains , Energy is the square of the mass of an abject times the speed of light squared. or we could say that the mass of an object is the speed of light squared divided by its energy ( Kenetic plus potential).To simplify things: A black hole is defined as 'a region of space from which nothing can escape'. This may need a little explanation.The first thing you need is a singularity. A singularity is an object which is both very small and very heavy, so it has a very large gravitational field strength. Around the singularity is something called the event horizon. This is not a separate entity but is the name we give for the 'edge' of the black hole. The gravitational effects of the singularity can be felt outside of the event horizon. The event horizon merely marks the 'boundary' between ordinary space and space which nothing can escape from (also know as a black hole). The reason nothing can escape from a black hole is that the gravitational force exerted by the singularity pulls things towards it so strongly that the only way to escape is to travel faster than light. Nothing can travel faster than light so nothing can escape. The field strength is so great that even light 'falls' towards the singularity.I hope that makes more sense (I don't know what the above are talking about vacuums and energy-mass conversions for, it just seems to complicate it)
What is so small and massive that it's gravity does not let light escape?
A black hole because it can be small and massive and not even light can escape it.
What is so small and massive that it's gravity does not even let light escape?
A black hole because it can be small and massive and not even light can escape it.
What is so small and massive that the gravity does not even let light escape?
Black holes - and not all are small.
The remains of a massive star pulled into a small volume by gravity?
The remains of a massive star pulled into a small volume by gravity?
What is the remains of a massive star pulled into a small volume by gravity?
A black hole
If gravity waves travel at the speed of light and black holes' escape velocity is much greater than the speed of light then how can gravity waves escape a black hole?
Gravity is not a 'wave', it is a field of curvature of space-time caused by objects with mass. A black hole contains the mass of a star, compressed to the space of a single atom (a singularity), the compression of so much mass into such a small space, is why the black hole has such a powerful gravitational pull.
Why doesnt the gas on a gas gaiant escape into space as it has on mercury?
it's small size and low gravity
Do large planets such as Jupiter and Saturn have gravity?
Anything with mass has gravity. Anything massive enough to be considered a planet has noticeable gravity, whether it is a giant planet like Jupiter or a small planet like Mercury.
Does regular planets have weak gravity?
Generally speaking, the bigger or more massive a planet it, the more gravity it has, since gravity and mass are related. the small planets such as Mars and Mercury have a weaker gravity, while the larger planets have a strong gravitational field.
Is the sun small or massive?
The sun is MASSIVE compared to all of the planets. The sun is SO HUGE, that if only it had gravity, it could pull every single planet in our solar system to a fiery death. ------------------------------------------ Correction: The gravity of the sun is the only thing keeping the planets in orbit. The sun is massive indeed compared to the Earth, but it is only an intermediate-sized star.
Does gravity exist on the inside of a beam of light?
light is made up of small energy packets known as photons which are massless and as gravity depends on the mass of the particle therefore there is no gravitational force applied on or applied by a beam of light.
Why blackholes have high gravity?
Blackholes are not really holes, it is where a huge amount of matter has come together and has been concentrated into a very small area. Mass is related to gravity, any mass has gravity, but you don't really notice it until you have enough mass like that of the earth. There is so much mass at the centre of a black hole that even light cannot escape it's immense gravity - that's why it's black.
