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Black holes - and not all are small.

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Q: What is so small and massive that the gravity does not even let light escape?
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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 its gravity does not even let light escape it?

Your category is the answer, that thing is black hole


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.