Photo of a black hole

 
EN
 
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EN
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10 April 2019 09:59
Jan_CAN
 
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Jan_CAN
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10 April 2019 10:46
 
EN - 10 April 2019 09:59 AM

News of a first:

https://www.cnn.com/2019/04/10/world/black-hole-photo-scn/index.html

Thanks for posting the interesting article.

https://eventhorizontelescope.org/

[ Edited: 10 April 2019 12:09 by Jan_CAN]
 
 
icehorse
 
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10 April 2019 14:45
 

i’m continually amazed at what astronomers can pull off. The measurements they take have to be so, so, so, so, very precise.

I can’t even cut 2x4’s to very accurate lengths. confused

 
 
burt
 
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10 April 2019 17:30
 
icehorse - 10 April 2019 02:45 PM

i’m continually amazed at what astronomers can pull off. The measurements they take have to be so, so, so, so, very precise.

I can’t even cut 2x4’s to very accurate lengths. confused

And how did they ever get it to pose?

 
Jan_CAN
 
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Jan_CAN
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11 April 2019 08:32
 

Such scientific achievements certainly amaze, and that this results from the collaborative effort of numerous countries is also inspiring.

One article says that “This black hole resides 55 million light-years from Earth and has a mass 6.5 billion times that of the Sun”.  For us puny humans, it can be difficult to comprehend such hugeness.  As these pictures are images from many millions of years ago, I wonder how much a black hole changes over such a time span.

 
 
icehorse
 
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icehorse
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11 April 2019 08:37
 
Jan_CAN - 11 April 2019 08:32 AM

Such scientific achievements certainly amaze, and that this results from the collaborative effort of numerous countries is also inspiring.

One article says that “This black hole resides 55 million light-years from Earth and has a mass 6.5 billion times that of the Sun”.  For us puny humans, it can be difficult to comprehend such hugeness.  As these pictures are images from many millions of years ago, I wonder how much a black hole changes over such a time span.

If our understanding is correct, I’d guess it gets a lot bigger as it swallows up nearby stars.

 
 
Twissel
 
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Twissel
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11 April 2019 11:15
 

By some estimates, the Black Hole’s Event Horizon is as big as our entire solar system.


https://xkcd.com/

 
 
icehorse
 
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11 April 2019 11:30
 
Twissel - 11 April 2019 11:15 AM

By some estimates, the Black Hole’s Event Horizon is as big as our entire solar system.

https://xkcd.com/

XKCD and “the oatmeal” are such great teachers!

 
 
Cheshire Cat
 
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13 April 2019 00:49
 

“This black hole resides 55 million light-years from Earth and has a mass 6.5 billion times that of the Sun”

The photons escaping from near the event horizon of the black hole, and have been traveling at the speed of light for 55 million years, have are not been subject to the effects of time. Because photons travel at the speed of light, time has ceased for them. Light, which is something we experience every moment of our waking lives, exists outside of time until it hits the atoms of our retinas or is absorbed by other atoms. A photon can travel billions of years and not one second of time has passed for that photon until it encounters another atom.

Time is not the familiar thing that we think it is.

And who know if time even exists inside a black hole?