re: Scientists set to unveil first picture of a black hole

quote:

---

Light can't escape a black hole, so how could a picture be taken?

---

From the OP:

quote:

---

The aim is to observe the immediate environment of the supermassive black hole Sagittarius

---

So, yes, once light crosses the event horizon, it’s never coming back so you cannot “see” a black hole. And even if it didn’t capture light, you still wouldn’t be able to get a visual image of it because it is a dimensionless singularity.

So you what they’re trying to observe is the light that was immediately outside of the event horizon so they can construct an idea of what everything in the event horizon looks like, which is almost certainly a hell of a lot harder than my simpleton brain is portraying it as here.

I'm calling b.s.



We saw a picture already

quote:

---

I dont like how that graphic states the center of a black hole is "infinite density". I think it's more accurately "incalculable density". Its not infinite, we just can't calculate it. Maybe a little ego there just calling it infinite instead of just saying "we can't figure it out"

---

Well, I mean, as long as YOU don’t like the verbiage.

frick those scientists, right?

The denisity of the overall black hole can be calculated.

The singularity is a geometric point at its center is where normal space math breaks down and gravity and therefore density becomes infinite. Hence it’s name. If it’s not infinite, no point in using the term singularity either.

It’s BECAUSE of those quantities being infitnite that general relativity laws break down. Relativity works all the way into neutron stars, where the denisity is so high the space between subatomic particles is reduced to zero and the star is literally partially held in shape because you can’t have two particles in the same place at the same time.

So if those quantities weren’t infinite, we would know exactly what happens in a black hole, because it would follow the same laws as everything.


Black holes are orders of magnitude denser than that. Arguably they might be a pinhole rip in space time itself that dumps into the quantum foam. But that’s the part we don’t know. The point is that the black hole singularity is where multiple physical attributes asymptotically approach infinity.

Now the “why,” “how,” and “what then” are where science can expand knowledge in the future.

But to say calling it “infinite” is a sign of ego to avoid saying “I don’t know” is a crock of shite spoken by someone who doesn’t know what they are talking about.

That entire label is a massive umbrella of the collective scientific community saying “we really don’t know what the frick is going on in there.”

I thought the going in part was a swirl around.

It's not energy escaping the black hole, it's energy that is ejected prior to crossing the event horizon. The matter flowing into the bh spins so fast and collides with such force that incredible amounts of energy are released and thrown away from the bh in the jets.

How to watch LINK

At 9 am Eastern on Wednesday, April 10, an international collaboration of scientists called the Event Horizon Telescope is releasing the results of an attempt to photograph Sagittarius A*.

You can watch them reveal the possible image of this black hole and the center of the galaxy right here in this live stream:

Not sure about the start all over part. The universe is not only expanding but accelerating. The matter is growing apart. Eventually the only things around will be black holes and red dwarves but even then they end.

Great documentary by Jim Al Khalili about the end of the universe: LINK

Ultimately math. Then physics. Then chemistry. Work em all out and observe what you see. If your observations match up you might be on the right track. If not go back to the drawing board. Many many very smart people have been doing this for centuries which leads us to our theories today.

Good video on what a black hole looks like. LINK

Here it is