Can a blackhole capture a photon?
98956
I do not believe a photon can be enslaved at a perfect distance in orbit around a black hole.  The reason for this is because once the Photon has entered the event horizon at that perfect distance it would accelerate in its orbit from which it could never escape the gravataional pull of the singularity.  There is no opposite force, anti-gravity, to contain the photon in orbit around the event horizon.
495476
Thats correct, merely a song. A sun couldnt esist in a black hole. It would be ripped to shreads in seconds!
807596
The photon sphere is the area around a black hole where photons travelling at a tangent to the sphere will become trapped in orbit. (link1) Inside the photonsphere it is impossible to orbit the hole, but you can still escape from it, and you can even hover between the Schwarzschild radius and the photonsphere - if you accelerate hard enough!\n\nWithin the ergosphere (but outside the event horizon) it is impossible to stand still - the gravity and rotation of the hole drag you arround even if you are travelling at lightspeed. But the rotation means that you can still escape, so long as you do not cross the event horizon.\n\nThe event horizon is the real 'do not cross' boundry of the black hole. Within the event horizon the escape velocity is greater than the speed of light, so if you get in there, you're stuck. Outside the event horizon, you can escape if you try hard enough.\n\nThe second link has a lot of good info on blackholes.
755373
Black holes are a concept in cosmology and theoretical physics.  The idea of going into one doesn't really fit in with the science. \n\nUsing a mechanical model of the universe, black holes are extremely dense concentrations of matter with such a high gravitational force that everything (including light) is sucked in and cannot escape.  If you went near a black hole, you would be broken down into subatomic particles and crammed into the lump of compressed matter at the centre.\n\nHowever, quantum physics gives an alternative theory.  Black holes could be the ways in and out of shortcuts across the universe so that something sucked into one could be spat out of another.  This is probably something best not tried at home.
661036
Yes. Theoretically, if you try to determine the 'place' of a photon 'exactly' as if it is a particle, you will not be able to detect it's velocity. And when you want to know its 'exact' speed, you will have no idea about where it is, just like a wave.
1136303
A black hole is not actually a hole, but a physical object in space, consisting of ultra compact particals, contained in such a small area that thier gravitational pull is much stronger than any other celestial body of comperable size....  Basically you put all the matter and gravitational pull from a large star into the volume of a small moon... particles captured by a black hole are crushed and added to its composition. This in theory includes photons (light and other energy)as well.  As for whether black holes are hoax's or not.. the answer is no... we can see their effects on star near them, including gases that are syphoned, and other gravitational interactions.  Additionally when matter approaches a black hole and is accellerated, it reaches an energy level at the even horizon where xrays are emited, but not captured, which in turn we can also detect.  Though there is much we do not know about them, they definately exist, and most likely in much greater numbers than we oringinally thought.
481008
Yes, they have gravitational pull strong enough to pull in light, but there is one known thing that can escape, thermal radiation. Steven Hawking's book a brief history of Time. There are many theories about black holes, but yes they exist.
1042298
No it can't.\n\nLaser light goes at exactly the speed of light.
784467
The center of our galaxy is obscured by dust and celestial bodies in visible light.\n   Longer wave lengths , infrared and radio waves give an unfocused view of the center.\n   The cosensus is that a massive black hole inhabits the center.\n   Astronomers have reasoned the existance of the black hole by the unusual movement of stars in that area.\n   Thier reasoning is quite persuasive but several points belie this reasoning.\n   The stars orbit the black hole in highly elliptical orbits slingshoting out at incredible speed.\n   A star is a sturdy entity in its place but would be very fragile and vulnerable racing past  a black hole.[Remember, some years ago,the comet that crashed into Jupiter,it landed in pieces because of the tidal forces on its last trajectory, broke it up]\n   These stars that seem to race past a black hole would shed most,if not all their mass and would not complete the orbit.\n   Then what is at the center of our galaxy? This may take some inovation,but it is not a black hole because black holes are nonviable entities.\n  They would be anamolies among celestial bodies.No upper limit to their size.\n   The surface would trap light at "C".THe quantum effect would allow a small percentage of photons to spiral outward.producing a slight glow in white light.\n   Anything that penetrated the event horizon would have to exceed "C"[Time dilation notwithstanding]\n   This would leave the other end of the quantum effect with slower than "C"photons,that could not spiral out could not spiral in and could not maintain orbit!\n   So what the heck is at the center of our galaxy??\n   The answer may depend on the question;What the heck happens to a neutron star if black holes do not exist??!!
603896
A black hole is a concentration of mass great enough that the force of gravity prevents anything past its event horizon from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). The gravitational field is so strong that the escape velocity past its event horizon exceeds the speed of light. This implies that nothing, not even light, inside the event horizon can escape its gravity. It is, however, theorized that wormholes can provide an exit path for energy or matter. The term "black hole" is widespread, even though it does not refer to a hole in the usual sense, but rather a region of space from which nothing can return.\n\nThe existence of black holes in the universe is well supported by astronomical observation, particularly from studying X-ray emission from X-ray binaries and active galactic nuclei.
636436
As much as Sci-Fi wants it to be something exotic, I'm afraid there is no "other side" to a black hole.\n\nImagine an atom of normal matter. Most of it is empty space. But it takes a great deal of pressure to compress it --- more pressure than is usually available. But if we concnetrate enough mass, the gravitational force will be strong enough that the space can be compressed. Protons (positive charge) and electrons (negative charge) will be pressed together to form neutrons (neutral charge). This happens in the core of very large stars at the end of their life. Their last stage of fusion produced iron at the core. When enough iron exist at the core, it suddenly collapses as I've described here. It then forms what is called a neutron star. If it is oriented just right with respect to the earth, it also appears as a pulsar (Internet search: pulsar +star +radio).\n\nThe neutron star is extremely dense. But there is still a force exerted by the neutrons which keeps the compression from going any further. But what if the mass was large enough to overcome that force and squeeze it even smaller. It appears that once this happens, there is nothing left to stop the compression and it continues until the object takes up no space at all, which is why it is sometimes called a singularity. It is a point in space with a huge mass and therefore extremely strong gravity.\n\nAll objects exert a gravitational pull on other objects. And therefore all distort space and bend the path that light takes. But this new object is so compressed that near it, the gravity is so strong that the path of light beams are looped back and cannot leave the object. Since no light can escape from it and anything nearby falls into it and disappears, it is called a black hole.\n\nMoving out from the black hole, we finally find a distance where light can barely escape. The line that divides where light can and cannot escape from the black hole is called the event horizon. It is not a "surface" of the black hole as there is nothing there. It is merely the distance at which the gravity drops enough that light can escape. If you could build a camera and drop it though the event horizon, nothing would change as it went through. No difference would be recorded. However the radio transmission from the camera would cease as radio is the same as light, just a different frequency. Once the camera went past the event horizon, it would no longer be able to transmit the pictures to you. The radio waves would loop back and head into the black hole. There are also some strange things that happen to time as you cross the even horizon, but you can run an Internet search to find out more.\n\nBecause it has compressed to the point of not taking up space, conventional physics expressions for matter no longer make sense in this environment. You end up with fractions where the volume or distance is in the denominator (lower half of the fraction) and therefore the fraction has an infinite value --- which doesn't make sense. So we can't really project what is going on inside. But the idea that it is a portal to other dimensions is more SciFi than science. There are some esoteric theories that guess about such things, but they are guesses. \n\nHope this helps\n\nIf you are interested in astronomy, try \nhttp://groups.yahoo.com/group/lunar-observing/\n\nChuck
750681
A photon with a wavelength of about 650 nm
921042
If it has a strong gravitational field, light will bend towards it. No sucking involved.
979267
light has mass.light Is made of photon particles and they have mass.do you know the mass of light coming from sun on earth per day is about 30000 tons.yes it is true.photon particles has a very little mass but they do have and  that is why light has mass.and so it gets pulled by a black hole.only black holes have the needed g force to pull light back.light  travels so fast at approximate 300000km per second so it can't be pulled by other stars though they are huge
527658
Ok for one anyone who has said light has mass is completely wrong. A black hole, as far as scientists know, is so massive that it infinitely distorts space time. Light is affected by space time. Think of it this way, you have sheet pulled tight then you drop a bowling ball on it but instead of just stretching it a finite amount, the divot in the sheet is infinite. Now if you were to roll a marble along the sheet it would go into that hole and not escape. Light is bent by the bends in space time so that when the light goes in it just follows the curvature of space time which "captures the light" and does not let it to flow back out.
1185271
I've heard this one before, there is no answer for we do not have the resources nor the expertise yet to answer such a perplexing problem. but i would imagine that the light from the headlights would travel 2x the speed of light and rip a hole in the time space continuum and cause a black hole.
19986
you get a black hole.