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10 votes
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‘Planet Nine’ may actually be a black hole
20 votes -
Recently discovered neutron star is almost too massive to exist
6 votes -
Astronomers detect the most massive neutron star yet
11 votes -
Physicists debate Hawking’s idea that the Universe had no beginning
13 votes -
I have a basic and possibly uninformed question about the event horizon of a black hole
It is my understanding that if you are looking at an object falling into a black hole from a remote viewpoint, then the object will appear to take “forever” to complete the fall into the black...
It is my understanding that if you are looking at an object falling into a black hole from a remote viewpoint, then the object will appear to take “forever” to complete the fall into the black hole. The object is effectively frozen in time at the black hole’s event horizon, from the remote viewer’s POV.
Is this the correct interpretation so far? If so, let’s remember that.
It is also my understanding that a black hole can increase in mass as it captures new objects. The mass does increase from an external viewpoint. Is this accurate?
If I understand known science on the above points, then the paradox I see here is that while the visual information is frozen in time from the external POV, the mass of the black hole does increase from the external POV. So is this where the Holographic Principle comes in? Or is there another explanation here, or am I off-base entirely?
Or is it just that the accretion disk gains mass and black holes never increase in mass from an external POV, after they are initially formed?
Is this known?
Please either attempt to answer my tortured question, or point me to material that might lead me ask a better question.
Thanks!
13 votes -
Astrophysical detection of the helium hydride ion HeH+
5 votes -
The most dangerous stuff in the universe - Strange stars explained
11 votes -
Something on Mars is producing gas usually made by living things on Earth
9 votes -
Venus is not Earth's closest neighbour
17 votes -
Do black holes contain dark matter?
4 votes -
Physicists analyze the rotational dynamics of galaxies and the influence of the mass of the photon
6 votes -
The double life of black holes: Perfect black holes are versatile mathematical tools. Just don’t mistake them for the real thing
3 votes -
Sean Carroll's Mindscape Podcast #28: Roger Penrose on spacetime, consciousness, and the universe
3 votes -
New Horizons successfully explores Ultima Thule
6 votes -
How Feynman Diagrams almost saved space
6 votes -
Dark energy may be incompatible with string theory
9 votes -
Supermassive black hole shot a neutrino straight at Earth
16 votes -
Mathematicians disprove conjecture made to save black holes
13 votes -
A Smooth Exit from Eternal Inflation - Stephen Hawking's final paper from the Journal of High Energy Physics
4 votes