First image of a Black Hole (Sagittarius A) to be revealed @ 14:00 today!

[foofighterjim]

The image, captured by the Event Horizon Telescope, will show the black hole at the center of the Milky Way, and will be shown in a press conference beginning at 9am ET (2pm BST) on April 10. The black hole at the center of the Milky Way, Sagittarius A, is 26,000 light years away from Earth and shrouded in dust and gas. Until now, our knowledge of it has been based on inferences rather than direct observation.

 

Catch the live stream here:

 

[DJ-1701]

 

Oooh ok...

 

Edited April 10, 2019 by DJ-1701

[HarryMonkey]

That reminds me. I must clean the light in our oven.

[mikeglover]

Very impressive use of technology

[JATSO]

The image, captured by the Event Horizon Telescope, will show the black hole at the center of the Milky Way, and will be shown in a press conference beginning at 9am ET (2pm BST) on April 10. The black hole at the center of the Milky Way, Sagittarius A, is 26,000 light years away from Earth and shrouded in dust and gas. Until now, our knowledge of it has been based on inferences rather than direct observation.

 

Catch the live stream here:

 

 

Beat me to it but never mind.

 

Astronomers are excited by finding out that a Black Hole is really an old Ring Donut lost in space from one of the early Apollo missions.

 

https://www.bbc.co.uk/news/science-environment-47873592

[6Foot2]

Link: xkcd: M87 Black Hole Size Comparison

 

[6Foot2]

Black hole vs Brexit:

 

Link:

[Ruben L. Oppenheimer Picture Tweet]

 

[korifugi]

Oh, great - now we've got his attention.

 

[foofighterjim]

Link: xkcd: M87 Black Hole Size Comparison

 

The sheer scale is one of the things that I have struggled to get my head around. Usually when we are talking about scale in space we refer to Jupiter, not the whole solar system!

 

One thing I don't understand is; if not even light can escape beyond the event horizon, how do Black Holes emit radiation from their poles?

[6Foot2]

...One thing I don't understand is; if not even light can escape beyond the event horizon, how do Black Holes emit radiation from their poles?

The constituents of relativistic jets of black holes (where they exist: It's not all black holes that exhibit them) has never crossed the event horizon. As material falls down the gravity well of the black hole it gets superheated, twisted and torn. In a process not yet fully understood most of the falling matter gets dragged into the black hole, but sometimes a small proportion is funnelled into the jets. Understanding how this works is currently an area study in astronomy/cosmology.

[Dos_Box]

The sheer scale is one of the things that I have struggled to get my head around. Usually when we are talking about scale in space we refer to Jupiter, not the whole solar system!

 

One thing I don't understand is; if not even light can escape beyond the event horizon, how do Black Holes emit radiation from their poles?

 

I went to UCLAN for a lecture on this (and black hole accretion discs) last autumn but sadly can't remember the exact reason!

It was a fascinating talk though.

[6Foot2]

How the image was captured:

 

 

Edited April 13, 2019 by 6Foot2
Add another video.

[Arthur]

How the image was captured

 

"How to take a picture of a black hole," a 2017 TED talk by grad student Katie Bouman who then helped make it happen

 

Yesterday, scientists revealed the first ever photo of a black hole. Three years ago, Katie Bouman, then a computer science grad student at MIT, led the development of a key algorithm that helped make this historical image possible. In the TED Talk above from 2017, she explained "How to Take a Picture of a Black Hole."

 

"No one of us could've done it alone," Bouman told CNN yesterday. "It came together because of lots of different people from many backgrounds."

 

In September, Bouman will start her teaching career as an assistant professor at the California Institute of Technology.

 

[6Foot2]

Link: Online trolls are harassing a scientist who helped take the first picture of a black hole [The Verge]

 

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

[ICTDirect_Dave]

One thing I don't understand is; if not even light can escape beyond the event horizon, how do Black Holes emit radiation from their poles?

The constituents of relativistic jets of black holes (where they exist: It's not all black holes that exhibit them) has never crossed the event horizon. As material falls down the gravity well of the black hole it gets superheated, twisted and torn. In a process not yet fully understood most of the falling matter gets dragged into the black hole, but sometimes a small proportion is funnelled into the jets. Understanding how this works is currently an area study in astronomy/cosmology.

 

https://en.wikipedia.org/wiki/Hawking_radiation

 

A little light reading on Hawking Radiation for you

 

Not the same stuff as the relativistic jets mentioned by @DaveP. This stuff is spookier.

After reading up on it, I can conclude that 'because quantum' is the scientific reason black holes emit radiation.

[Arthur]

This stuff is spookier.

Even spookier are strangelets and strange stars.

 

I hadn't even heard of them until I watched the video below.