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48 votes
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Webb finds early galaxies weren’t too big for their britches after all
17 votes -
How far away are we from the location of the Big Bang?
16 votes -
Arecibo "Wow!" signal likely caused by rare astrophysical event
23 votes -
Black holes can’t be created by light
16 votes -
NSF halts South Pole megaproject to probe infant cosmos’ growth spurt
8 votes -
Astronomers accidentally discover dark primordial galaxy without stars
25 votes -
The brightest gamma-ray burst ever recorded rattled Earth's atmosphere
18 votes -
All objects and some questions
4 votes -
The plot of all objects in the universe
10 votes -
XRISM will be launching Sunday, Aug 27 at 8:26pm, EDT (Aug 28, 0:26:22 UTC)
6 votes -
How a Harvard professor became the world’s leading alien hunter
12 votes -
A big gravitational wave announcement is coming thursday. Here's why we're excited
19 votes -
Construction begins on Australia’s Square Kilometre Array telescope
10 votes -
Brightest-ever space explosion reveals possible hints of dark matter
11 votes -
One great article about every planet in the solar system
4 votes -
There are more galaxies in the Universe than even Carl Sagan ever imagined
10 votes -
Netta Engelhardt discovered an escape from Hawking’s black hole paradox
7 votes -
Why is the Earth round but the Milky Way flat?
6 votes -
Harvard astrophysicist says 2017 interstellar object sighting was humanity’s first contact with an artifact of extraterrestrial intelligence
12 votes -
What if Earth got kicked out of the solar system? Rogue Earth
3 votes -
Australian telescope maps new atlas of the universe in record speed
5 votes -
New evidence for cyclic universe claimed by Roger Penrose and colleagues
6 votes -
A new cosmic tension: The universe might be too thin
5 votes -
What if the Big Bang was actually a Big Bounce?
9 votes -
Scientists just found the biggest neutron star (or smallest black hole) yet in a strange cosmic collision
5 votes -
Searching for scalar dark matter using compact mechanical resonators: Resonators could access a broad segment of previously unprobed parameter space
4 votes -
New type-II supernova 2020jfo detected in Messier 61 galaxy
5 votes -
ESO instrument finds black hole 1000 lightyears from Earth
6 votes -
Remembering Big Bang basher Fred Hoyle
5 votes -
What is the geometry of the universe?
5 votes -
WFIRST, proposed for cancellation, is approved for development
3 votes -
What we know about dark matter
3 votes -
Neutron stars – The most extreme things that are not black holes
10 votes -
‘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 -
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 -
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