First actual image of a black hole revealed...

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Dratsab

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#2214886 11-Apr-2019 10:36

DarthKermit: The actual image they've come up with has now been made public. Kinda looks like an orange out of focus doughnut.

Fred99

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#2214887 11-Apr-2019 10:36

freitasm:

tdgeek:

Thats a rubbish resolution. Can you re post as 4k and HDR? :-)

Why bother? If your screen is not OLED you won't see a true black.

Not even totally blind people can see true black, they only see nothing at all.

DarthKermit

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#2214895 11-Apr-2019 10:52

The only thing that can devour more mass than a black hole: homer Simpson.

KrazyKid

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#2214898 11-Apr-2019 11:01

XKCD link

Makes it seem kind of big :)

BlinkyBill

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#2214899 11-Apr-2019 11:03

DarthKermit:
2.7 billion miles away so 27 million hours!

It’ll still take the Mrs only 3/4 of an hour before she has to go to the toilet.

nunz

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#2215227 11-Apr-2019 19:57

tdgeek:

DarthKermit:

tdgeek:

Thats a rubbish resolution. Can you re post as 4k and HDR? :-)

Watch out I don't repost it so large it'll take you an eternity to scroll from one side to the other! Bwahahaha!

:-) Ill never tire of Universe stuff. Bit O Trivia. Say you started driving to Neptune (if you could). 100mph, 24/7 how long would it take?

27 -28 million hours depending on if itis at its closest or longest distance but this is a trick question.

AS a neptunian year is 165 earth years it could be claimed it is 27 000 000 / (165 * 24)hours but that too is faulty.

both Earth and Neptune orbit the sun. If we go to Neptune in one direction we would in effect end up chasing it from behind and it would travel away from us faster than 100mph and so we would never catch up - but it would eventually lap us.

However we could also stay still and it would catch us up or we could travel towards it.

But travelling towards is tricky too as to approach it at 100mph, we would in effect have to run away from it at Neptunes orbital speed - 100mph and let it catch us up at 100mph.

So the reality is there is no right answer but something in the region of 27 million hours is close enough for a ball park figure.

nunz

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#2215232 11-Apr-2019 20:07

SaltyNZ:
DarthKermit:

The actual image they've come up with has now been made public. Kinda looks like an orange out of focus doughnut.

Yes, it was pretty much always going to: but that's important in and of itself. It DOES look exactly like it was expected to look. So once again ... we fail* to find the crack in Relativity that might lead to a quantum gravity theory. *Of course, the image has only just been released. There will be years of research poring over it to see if there is a crack to be exposed.

Reminds me of a quote from Episode 1 of Third Rock From the Sun where Dick has a throw away line about Earths misplaced confdence in Gravity.

As we can only explain gravity in terms of the effect it has on objects, but not how it affects objects (the mechanism), then us explaining relativity is like a baby trying to explain why there are more irrational numbers than rational ones. We are rying to run before we can walk.

Also it looks like we expect it to: There is so much in astro physics and astronomy that breaks our expectations that 'it looks like we expect it to' is more of a piece of luck than precise science.

Recently predictions of tyes of black holes, the effects of black holes types of super nova and other similar phenomina have been broken as the universe displays things well out of kilter with expectations.

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DjShadow

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#2215251 11-Apr-2019 20:43

I came across this perspective of the photo which really brings it home size wise

nzkc

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#2215257 11-Apr-2019 20:48

Woah... this video really puts a lot of it into perspective. I have a whole new appreciation for this image!

DarthKermit

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#2215267 11-Apr-2019 21:00

This black hole is about 55 million light years away from us. Another really freaky and amazing space oddity is the Boötes Void. An area almost 330 million light years in diameter that contains very few galaxies.

Batman

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#2215397 12-Apr-2019 01:02

i re-played the TED video I watched last year.

am I right to think that they had already decided on the image they wanted to render back in 2017

nunz

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#2215491 12-Apr-2019 08:45

Batman:
i re-played the TED video I watched last year.

am I right to think that they had already decided on the image they wanted to render back in 2017

She used a faulty analogy...which if is the methodolgy makes whatever they render artistic creativity not factual based.

"A forensic scientist can use limited data to reconstruct a face using what they know about faces. The telescope algorithm works similarly."

The fault here is we know tons about faces from facts, actual measurements and experience.
We know nothing about black holes from facts, actual measurements and experience and so reconstructing an image based on an algorithm to fill in the gaps has to be an exercise in hope and fantasy....if her analogy is used.

tdgeek

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#2215494 12-Apr-2019 08:52

DjShadow:

I came across this perspective of the photo which really brings it home size wise

Ignoring dark matter, there is a miniscule amount of matter in an area of that size. Given that a black Hole can be EXTREMELY dense, its hard to know how much matter is in it now, and if there is that much in it.

Fred99

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#2217165 15-Apr-2019 07:55

Black holes don’t suck, but sometimes the internet does

nunz

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#2221470 20-Apr-2019 14:19

Fred99:

Black holes don’t suck, but sometimes the internet does

Gravity is a myth. The Earth sucks.?

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