Popular Post Still Waters Posted April 10, 2019 Popular Post #1 Share Posted April 10, 2019 Astronomers have taken the first ever image of a black hole, which is located in a distant galaxy. It measures 40 billion km across - three million times the size of the Earth - and has been described by scientists as "a monster". The black hole is 500 million trillion km away and was photographed by a network of eight telescopes across the world. Details have been published today in Astrophysical Journal Letters. https://www.bbc.co.uk/news/science-environment-47873592 14 Link to comment Share on other sites More sharing options...
quillius Posted April 10, 2019 #2 Share Posted April 10, 2019 (edited) wow.... 500 million trillion KM away.......mind blowing Edited April 10, 2019 by quillius 4 Link to comment Share on other sites More sharing options...
travelnjones Posted April 10, 2019 #3 Share Posted April 10, 2019 I beg to differ 4 1 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #4 Share Posted April 10, 2019 7 minutes ago, quillius said: wow.... 500 million trillion KM away.......mind blowing 55 million light years makes more sense. But it's still amazing, that the light we see on the photo, is 55 million years old! 8 Link to comment Share on other sites More sharing options...
Erno86 Posted April 10, 2019 #5 Share Posted April 10, 2019 (edited) "First ever picture of a black hole" http://www.youtube.com/watch?v=xsnjYC64RqA Edited April 10, 2019 by Erno86 link work 3 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #6 Share Posted April 10, 2019 @danydandan I finally figured out what radiation they used to make the picture: X-rays! 1 1 Link to comment Share on other sites More sharing options...
danydandan Posted April 10, 2019 #7 Share Posted April 10, 2019 2 minutes ago, sci-nerd said: @danydandan I finally figured out what radiation they used to make the picture: X-rays! Oh, I thought you asked what radiation was captured in the image. Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #8 Share Posted April 10, 2019 Just now, danydandan said: Oh, I thought you asked what radiation was captured in the image. That's what I wanted to say! Almost. They observed/detected x-rays from M87, and made a picture from that. Link to comment Share on other sites More sharing options...
danydandan Posted April 10, 2019 #9 Share Posted April 10, 2019 1 minute ago, sci-nerd said: That's what I wanted to say! Almost. They observed/detected x-rays from M87, and made a picture from that. Ah ok. Still sad that Hawking's wasn't alive to see this. 7 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #10 Share Posted April 10, 2019 2 minutes ago, danydandan said: Ah ok. Still sad that Hawking's wasn't alive to see this. Yes indeed. Nobody would have appreciated it more than him. 1 Link to comment Share on other sites More sharing options...
MWoo7 Posted April 10, 2019 #11 Share Posted April 10, 2019 (edited) 3 hours ago, sci-nerd said: 55 million light years makes more sense. Indeed. No reply necessary , I was just trying to comment and section off pieces of a quote, which works by placing cursor and blasting the enter key. Again no reply necessary. Quote But it's still amazing, that the light we see on the photo, is 55 million years old! Could be that an even bigger one has eaten everything, but not our area with our little galaxy. Its just that the light is so blessidly slow HA! , it hasn't shown us that yet and in a few years we`ll suddenly know. Eeeh kind of a far reaching joking concept thought. We might be like blurry vision slugs on the bottom of the sea. If a fish swam over, looped back and down to eat us, by the time we noticed a change in the light and the shadow passing over... the end. Recap: Again no reply necessary. Laterzzzzzzzzzzzzzzzzzz Edited April 10, 2019 by MWoo7 Link to comment Share on other sites More sharing options...
bison Posted April 10, 2019 #12 Share Posted April 10, 2019 (edited) The image of the black hole was made from radio waves. Specifically, radio waves of 1.3 millimeters wave length ( 230.6 GigaHertz) That's several hundred times the frequency use for television broadcasting, and, so, several hundreds of times shorter in wavelength. X-rays do not penetrate the Earth's atmosphere, so can not be used by a ground-based system like the Event Horizon Telescope. I was heartened to learn that data were also taken for the black hole at the center of our galaxy. These are still being analyzed, as the image is more difficult to interpret than that of M87. The astronomers expect to provide an image of our own galaxy's black hole soon. This should prove very interesting, given preliminary findings, announced a couple of months ago. At that time it was said that it appears that an astrophysical jet from 'our' black hole is nearly aimed at Earth, instead of upward and downward through the galactic plane. This latter configuration is consistent in other galaxies with black holes with astrophysical jets. Edited April 10, 2019 by bison 1 1 Link to comment Share on other sites More sharing options...
Jon the frog Posted April 10, 2019 #13 Share Posted April 10, 2019 (edited) What's more beautiful than a giant donuts ! Edited April 10, 2019 by Jon the frog 3 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #14 Share Posted April 10, 2019 13 minutes ago, bison said: The image of the black hole was made from radio waves. Specifically, radio waves of 1.3 millimeters wave length ( 230.6 GigaHertz) That's several hundred times the frequency use for television broadcasting, and, so, several hundreds of times shorter in wavelength. X-rays do not penetrate the Earth's atmosphere, so can not be used by a ground-based system like the Event Horizon Telescope. I was heartened to learn that data were also taken for the black hole at the center of our galaxy. These are still being analyzed, as the image is more difficult to interpret than that of M87. The astronomers expect to provide an image of our own galaxy's black hole soon. This should prove very interesting, given preliminary findings, announced a couple of months ago. At that time it was said that it appears that the astrophysical jet from 'our' black hole is nearly aimed at Earth, instead of upward and downward through the galactic plane. This latter configuration is consistent in other galaxies with black holes with astrophysical jets. I have a reliable source saying microwaves. You say radio. Another source says x-rays. Dammit it's confusing! Link to comment Share on other sites More sharing options...
Aquila King Posted April 10, 2019 #15 Share Posted April 10, 2019 9 Link to comment Share on other sites More sharing options...
Popular Post zep73 Posted April 10, 2019 Popular Post #16 Share Posted April 10, 2019 3 9 Link to comment Share on other sites More sharing options...
bison Posted April 10, 2019 #17 Share Posted April 10, 2019 6 minutes ago, sci-nerd said: I have a reliable source saying microwaves. You say radio. Another source says x-rays. Dammit it's confusing! Microwaves are radio waves, specifically those between wavelengths of 1 meter and 1 millimeter (300 MegaHertz and 300 GigaHertz). Black holes also emit X-Rays, but those did not figure in the new black hole image. The confusion is natural. Technical details like these are often omitted or glossed over in journalistic accounts. 1 Link to comment Share on other sites More sharing options...
Erno86 Posted April 10, 2019 #18 Share Posted April 10, 2019 (edited) "National Science Foundation/Event Horizon Telescope Press Conference" http://www.youtube.com/watch?v=lnJi0Jy692w Edited April 10, 2019 by Erno86 1 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #19 Share Posted April 10, 2019 1 minute ago, bison said: Microwaves are radio waves Hmm... My microwave oven never plays music.Maybe I should get a refund? 1 1 Link to comment Share on other sites More sharing options...
Abilityperson Posted April 10, 2019 #20 Share Posted April 10, 2019 Wow thanks that was amazing Thanks for sharing. Link to comment Share on other sites More sharing options...
bison Posted April 10, 2019 #21 Share Posted April 10, 2019 Before television and radio relay satellites became common, it was normal practice to send programs over microwave beams, from one relay tower to another, across the countryside. Link to comment Share on other sites More sharing options...
Erno86 Posted April 10, 2019 #22 Share Posted April 10, 2019 (edited) "In the Shadow of a Black Hole" - April 10, 2019 http://www.youtube.com/watch?v=omz77qrDjsU Edited April 10, 2019 by Erno86 added a few words Link to comment Share on other sites More sharing options...
Aquila King Posted April 10, 2019 #23 Share Posted April 10, 2019 Seems I can't go anywhere online atm without looking into the void... 1 1 3 Link to comment Share on other sites More sharing options...
zep73 Posted April 10, 2019 #24 Share Posted April 10, 2019 JESUS IT'S BIG!! 4 1 Link to comment Share on other sites More sharing options...
XenoFish Posted April 10, 2019 #25 Share Posted April 10, 2019 And inside that black hole is another universe. A universe in which another group of humans are looking at an almost exact copy of that black hole, which also has a universe in it.... 1 2 Link to comment Share on other sites More sharing options...
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