So like in your opinion, tldr, do you think it’s explicitly impossible for light to survive entering a black hole such that it could reproduce an image of whatever it reflected off?
Light that falls over the edge of the event horizon cannot get out again. The distortion from the mass of the black hole is simply too steep and we’ve taken pictures of the dark shadow that this creates in space.
Once over the event horizon, the light still “exists” in some manner, but has been effectively cut off or removed from ever interacting with our universe again, so it also doesn’t really exist anymore.
The real problem happens further down towards the singularity where space pinches off. That part of the gravity well is so steep and trails off to forever, that light/particles cannot actually enter it, the same way that it’s hard to send a probe to orbit the sun or mercury because it takes so much slowing down. As a circular orbit shrinks, the momentum of the orbiting object is conserved so the object speeds up, as it speeds up, it gains enough velocity to push back out. So particles approaching infinite velocity do… what? We don’t know, but this is just one of many places where our physics and understanding breaks down because it approaches infinities.
Light that falls over the edge of the event horizon cannot get out again
I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.
There is a whole area of cosmology that looks at large-scale event horizons, they can exist in many forms, and yes the “drop off” point over large scales is somewhat similar but those far away galaxies actually appear more like what we would see if a galaxy was falling into a black hole, IE: they turn red and seem to fade away… this is because we stop receiving new information from them because the expansion of space is faster than new photons can reach us… this doesn’t cut off sharply, it’s just the last photons stretch out so wide that the waves may as well be flat.
If the observer is inside the event horizon of the black hole, they’ll see the light as normal. There’s nothing special about the event horizon for the observer or the ray of light.
If the observer is outside of the black hole, they won’t ever see the light.
I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.
It’s definitely possible in the case of a real black hole. I think it’s unlikely to apply to the model we’re talking about - the spaghettification would have to happen outside the event horizon, and that only applies to very small black holes.
Love PBS Space time!
So like in your opinion, tldr, do you think it’s explicitly impossible for light to survive entering a black hole such that it could reproduce an image of whatever it reflected off?
Light that falls over the edge of the event horizon cannot get out again. The distortion from the mass of the black hole is simply too steep and we’ve taken pictures of the dark shadow that this creates in space.
Once over the event horizon, the light still “exists” in some manner, but has been effectively cut off or removed from ever interacting with our universe again, so it also doesn’t really exist anymore.
The real problem happens further down towards the singularity where space pinches off. That part of the gravity well is so steep and trails off to forever, that light/particles cannot actually enter it, the same way that it’s hard to send a probe to orbit the sun or mercury because it takes so much slowing down. As a circular orbit shrinks, the momentum of the orbiting object is conserved so the object speeds up, as it speeds up, it gains enough velocity to push back out. So particles approaching infinite velocity do… what? We don’t know, but this is just one of many places where our physics and understanding breaks down because it approaches infinities.
I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.
There is a whole area of cosmology that looks at large-scale event horizons, they can exist in many forms, and yes the “drop off” point over large scales is somewhat similar but those far away galaxies actually appear more like what we would see if a galaxy was falling into a black hole, IE: they turn red and seem to fade away… this is because we stop receiving new information from them because the expansion of space is faster than new photons can reach us… this doesn’t cut off sharply, it’s just the last photons stretch out so wide that the waves may as well be flat.
From which point of view?
If the observer is inside the event horizon of the black hole, they’ll see the light as normal. There’s nothing special about the event horizon for the observer or the ray of light.
If the observer is outside of the black hole, they won’t ever see the light.
I’m talking as an inside observer. Like what if spaghettification = red shift and the “too large, too old, to developed” galaxies like MoM-z14 detected by JWST are actually from outside our universe’s event horizon.
It’s definitely possible in the case of a real black hole. I think it’s unlikely to apply to the model we’re talking about - the spaghettification would have to happen outside the event horizon, and that only applies to very small black holes.