Author Topic: Post The Science-and-Skepticism-i-est Images You've Got  (Read 92133 times)

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Offline werecow

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #825 on: April 10, 2019, 06:53:42 PM »


Meh, not that impressive. Probably cause the photo was taken from too far away. It probably looks pretty cool up close.

I mean, it's only the first direct image of a the event horizon of a black hole ever and the first ever direct visual confirmation that black holes actually exist. This is resolving a relatively small structure (smaller than the orbit of Pluto) in another galaxy 55 million light years away. It's amazing we can discern any structure at all.
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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #826 on: April 10, 2019, 07:07:12 PM »
I know, that was a joke. It's not a good idea to get a close up of a black hole.
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Offline werecow

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #827 on: April 10, 2019, 07:33:17 PM »
I know, that was a joke. It's not a good idea to get a close up of a black hole.

Oh yeah, sorry, I needed to change the filter on my sarcasm meter. Carry on.

Offline gmalivuk

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #828 on: April 10, 2019, 10:15:58 PM »
(smaller than the orbit of Pluto)
Not quite
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Offline werecow

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #829 on: April 10, 2019, 10:46:45 PM »
Ah, interesting, I guess the article I read had it wrong.

Offline DamoET

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #830 on: April 11, 2019, 03:47:23 AM »
Ah, interesting, I guess the article I read had it wrong.

Not if this is correct.
https://www.eso.org/public/images/eso1907a/
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Offline gmalivuk

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #831 on: April 11, 2019, 08:29:59 AM »
Ah, interesting, I guess the article I read had it wrong.

Not if this is correct.
https://www.eso.org/public/images/eso1907a/
That article says 40 billion km across. The orbit of Pluto is about 15 billion km across.
The world is so exquisite with so much love and moral depth, that there is no reason to deceive ourselves with pretty stories for which there's little good evidence. Far better...is to look death in the eye and to be grateful every day for the brief but magnificent opportunity that life provides.

Offline Igor SMC

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #832 on: April 11, 2019, 10:21:31 AM »
(smaller than the orbit of Pluto)

We must keep in mind that the shadow that we see in the picture, does NOT correspond to the size of the black hole. The radius of the shadow is 2.6 times bigger than the black hole itself... so yes, it could be "just" the size of the orbit of Pluto.
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Offline The Latinist

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #833 on: April 11, 2019, 11:03:08 AM »
(smaller than the orbit of Pluto)

We must keep in mind that the shadow that we see in the picture, does NOT correspond to the size of the black hole. The radius of the shadow is 2.6 times bigger than the black hole itself... so yes, it could be "just" the size of the orbit of Pluto.

That was my initial reaction to the discussion, and it wasn't clear from the articles I read whether 40 billion kilometers was the diameter of the event horizon or of the shadow.  But since the mass of the black hole is given as 6.5 billion solar masses, the Schwarzschild radius can be calculated at ~19 billion kilometers.  The diameter of the black hole is then 38 billion kilometers, and the diameter of its shadow 100 billion km.
« Last Edit: April 11, 2019, 11:14:18 AM by The Latinist »
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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #834 on: April 11, 2019, 11:07:32 AM »
"Sunday's horoscope is note worthy because of its strange, sudden and wholly unpredictable and inexplicable occurrences, affecting all phases of life." Your Horoscope" L.A. Evening Herald Express, Sat, 12/06/41

Offline brilligtove

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #835 on: April 11, 2019, 11:33:20 AM »


At time of posting the video was not available on YouTube proper, but the embedded version played fine.
« Last Edit: April 11, 2019, 11:47:39 AM by brilligtove »
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Offline werecow

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #836 on: April 12, 2019, 09:51:07 PM »


Still 5 years old.
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Offline werecow

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #837 on: April 19, 2019, 07:26:53 PM »

Offline The Latinist

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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #838 on: April 19, 2019, 08:47:55 PM »
Wow.  That’s kind of amazing.
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Re: Post The Science-and-Skepticism-i-est Images You've Got
« Reply #839 on: April 20, 2019, 07:25:10 PM »
APOD: SpaceX Falcon Heavy Launch, a bit closer than I like.

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