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A Brief History of Black Holes
Real Clear Science ^ | 29 Dec, 2018 | Carla Rodrigues Almeida

Posted on 12/29/2018 5:39:27 PM PST by MtnClimber

Late in 2018, the gravitational wave observatory, LIGO, announced that they had detected the most distant and massive source of ripples of spacetime ever monitored: waves triggered by pairs of black holes colliding in deep space. Only since 2015 have we been able to observe these invisible astronomical bodies, which can be detected only by their gravitational attraction. The history of our hunt for these enigmatic objects traces back to the 18th century, but the crucial phase took place in a suitably dark period of human history – World War II.

The concept of a body that would trap light, thereby becoming invisible to the rest of the universe, had first been considered by the natural philosophers John Michell and later Pierre-Simon Laplace in the 18th century. They used Newton’s gravitational laws to calculate the escape velocity of a light particle from a body, predicting the existence of stars so dense that light could not escape from them. Michell called them “dark stars”.

But after the discovery that light took the form of a wave in 1801, it became unclear how light would be affected by the Newtonian gravitational field, so the idea of dark stars was dropped. It took roughly 115 years to understand how light in the form of a wave would behave under the influence of a gravitational field, with Albert Einstein’s General Relativity Theory in 1915, and Karl Schwarzschild’s solution to this problem a year later.

Schwarzschild also predicted the existence of a critical circumference of a body, beyond which light would be unable to cross: the Schwarzschild radius. This idea was similar to that of Michell, but now this critical circumference was understood as an impenetrable barrier.

(Excerpt) Read more at realclearscience.com ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; blackholes; darkenergy; darkforce; darkmatter; oppenheimer; science; speedofdark; stringtheory

1 posted on 12/29/2018 5:39:27 PM PST by MtnClimber
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To: MtnClimber

A pretty good article.


2 posted on 12/29/2018 5:39:50 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

Enough about moo-shell.


3 posted on 12/29/2018 5:40:42 PM PST by rktman ( #My2ndAmend! ----- Enlisted in the Navy in '67 to protect folks rights to strip my rights. WTH?)
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To: MtnClimber

They don’t exist. The End.


4 posted on 12/29/2018 5:56:00 PM PST by TruthInThoughtWordAndDeed (Yahuah Yahusha)
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To: TruthInThoughtWordAndDeed

Pretty good movie though.


5 posted on 12/29/2018 5:58:37 PM PST by wally_bert (We're low on dimes in fun city.)
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks MtnClimber.

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6 posted on 12/29/2018 6:03:48 PM PST by SunkenCiv (and btw -- https://www.gofundme.com/for-rotator-cuff-repair-surgery)
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To: MtnClimber

Black holes are out of sight...


7 posted on 12/29/2018 6:05:57 PM PST by null and void (The Deep State is why even though our economy is booming, the stock market is losing ground.)
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To: rktman

EWWWW!


8 posted on 12/29/2018 7:14:53 PM PST by jmacusa (Made it Ma, top of the world!'')
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To: jmacusa

Someone had to. Say it that is.


9 posted on 12/29/2018 7:15:51 PM PST by rktman ( #My2ndAmend! ----- Enlisted in the Navy in '67 to protect folks rights to strip my rights. WTH?)
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To: MtnClimber

“5A Brief History of Black Holes”

Is that anything like a brief history of black asshole politicians?


10 posted on 12/29/2018 7:16:24 PM PST by Bonemaker (invictus maneo)
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To: rktman

I must now go and scrub my brain, lol!


11 posted on 12/29/2018 7:18:19 PM PST by jmacusa (Made it Ma, top of the world!'')
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To: Bonemaker
Is that anything like a brief history of black asshole politicians?

Sort of the same, they both suck.

12 posted on 12/29/2018 7:22:11 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: jmacusa
Hildabeast recommends bleach bit for those hard to erase parts. 👹
13 posted on 12/29/2018 7:23:17 PM PST by rktman ( #My2ndAmend! ----- Enlisted in the Navy in '67 to protect folks rights to strip my rights. WTH?)
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To: MtnClimber

this critical circumference was understood as an impenetrable barrier.

much like the liberal cranial membranes that surround their skulls precious content. even a 2 by 4 can not get by this one.

When Black Holes Collide
Strange Things Happen

Merry New Year


14 posted on 12/29/2018 8:34:37 PM PST by NormsRevenge (Semper Fi - Monthly Donors Rock!!!)
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To: rktman

Hildabeast!, Moochelle! OH agony, AGONY!


15 posted on 12/29/2018 8:53:32 PM PST by jmacusa (Made it Ma, top of the world!'')
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To: NormsRevenge

Happy New Year to you Norm. I cannot believe you are still permitted to access the internet with Gov Moonbeam ruling over you!


16 posted on 12/29/2018 8:54:10 PM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: jmacusa

#15. You wanna suffer jmacusa? Add Maxine Waters to that list. She’s the biggest “hole” in the universe. You’d need a whole book just to tell her story.

Agony? You want Agony? Well, boychek, you’ve got it. Coming to a bookstore near you very soon “My Life as a Black Hole” by Maxine Waters. Filled with hundreds of pictures including her secret wig collection, 500 Red lipsticks, and her secret collection of Serena Williams photos.

Next, Ocassionally Cortexually Functioning’s “life history”. Coming to a bodega near you, next to the Plantain leaves and pigs’ ears.


17 posted on 12/29/2018 11:18:19 PM PST by MadMax, the Grinning Reaper
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To: MadMax, the Grinning Reaper

Oh horror, the agony, the AGONY of these harpies from Hell! Death where is thy sting?


18 posted on 12/30/2018 1:37:41 AM PST by jmacusa (Made it Ma, top of the world!'')
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To: MtnClimber

\[’][


19 posted on 12/30/2018 8:33:50 AM PST by hattend
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