2006-06-10 03:14:03 · 7 answers · asked by shri 6 in Science & Mathematics ➔ Astronomy & Space
Before I answer this, you need to know what gravity is. Gravity is the attractive force between two bodies that pulls them together (like you and the earth). If there was no gravity, you would fly off of earth.
A star has a life cycle, just like nearly anything else in this universe. It has a growing phase where it gets bigger and a shrinking phase (the latter part of the star's life). At the last point of its life, IF and only if it is of sufficient mass (it has got to be really really heavy), it will have so much gravity that it will pull itself in to its center. At this point, imagine something that has the mass off 1000 times our sun but the size of a pin point (just for visualization, I know). Something of that dimension has a gravity that is soooo intense, that absolutely nothing can escape. If a ship went by the black hole, it would be sucked in by the black hole's gravity and crushed to the size of a pinpoint. If a comet went by, same idea. If a light ray (which is consisting of particles that act like a wave) went by a black hole, even the particles of the light ray would be sucked into the black hole. Normally nothing can bend a light way. However; if a light ray passes a black hole, the black hole will suck it in.
2006-06-10 03:35:16 · answer #1 · answered by dlouhane 2 · 0⤊ 0⤋
it rather is 2 questions, yet permit's see if i won't be able to straighten issues out right here. do no longer think of of a black hollow as being fabric, at first. they are not longer rely; they are 'singularities'. (this is a posh phrases physicists use for 'we don't understand what this is to any extent further.') mutually as the circumference of a black hollow would be calculated, the radius of a black hollow is concept to be countless. Pi is going all to products. subsequently, the easy will by no potential get away, because of the fact it has an efficiently countless distance to conceal (whether you're 'purely interior' the form horizon.) the reason we shop on with get away velocity of sunshine comes from the phenomenon of the Doppler shift. all of us understand from measurements that the frequency of sunshine shifts whilst it is going by way of a gravitational container. by potential of calculating the frequency because of the fact the gravity will strengthen, we are able to finally attain a component the place the freequency would would desire to be some distance greater than any ever stated. Such photons would be so penetrating that they could no longer be detected in any way by potential of any gadget. (this would somewhat probably be motives why digital debris can spontaneously look outdoors the form horizon of black holes, and why this is known that some black holes would eventualy 'evaporate' in a burst of radiation and severe-skill debris, as quickly as the mass is purely too low to stay a black hollow and shelter the form horizon. i think it would revert to volatile neutronium at that component.) yet whether photons do get away black holes, we would desire to no longer come across them, as i discussed above.
2016-12-13 15:23:55 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Gravity has been shown to be a bending of space by the presence of mass. The more mass, the more extreme is that bending. The mass of a black hole is so immense that space in effect is bent back on itself, and since light must follow the shape of that space it can not move away from a black hole.
2006-06-10 04:26:31 · answer #3 · answered by Chug-a-Lug 7 · 0⤊ 0⤋
Black holes have gravity, like the Earth, except they have LOTS of gravity. The gravity is so strong it actually pulls the light back down to the surface. Nothing can escape.
2006-06-10 03:25:47 · answer #4 · answered by Xraydelta1 3 · 0⤊ 0⤋
Black holes are not fully understood because we haven't had a good chance to study one. The main thing to remember is that they have a lot of gravity so almost nothing can get out. Exactly what can get out is still debatable. It's widely believed that matter and energy can't get out.
2006-06-10 07:27:07 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Any thing and every thing that enters a black hole is then spread apart from its original position(because of the great gravitational force on them.) That is why when any thing goes into a black hole nothing can be retrieved from it.
2006-06-10 05:47:55 · answer #6 · answered by Dave 2 · 0⤊ 0⤋
check it out on the discovery web page
2006-06-10 03:18:48 · answer #7 · answered by Anonymous · 0⤊ 0⤋