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This is the first image of the black hole at the heart of the Milky Way "We finally have the first look at our Milky Way black hole, Sagittarius A*," an international team of astrophysicists and researchers from the Event Horizon Telescope team said.
This is the first image of the black hole at the heart of the Milky Way
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Updated May 12, 2022 11:23 AM ET
Originally published May 12, 2022 9:22 AM ET
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Earth Sees First Image Of A Black Hole
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"It's the dawn of a new era of black hole physics," the Event Horizon Telescope team said as it released the first-ever image of supermassive black hole in the center of the Milky Way.
EHT Collaboration
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"It's the dawn of a new era of black hole physics," the Event Horizon Telescope team said as it released the first-ever image of supermassive black hole in the center of the Milky Way.
For years, the supermassive black hole in the dark center of the Milky Way galaxy has been theorized about and studied — and finally, it's been captured in an image.
"We finally have the first look at our Milky Way black hole, Sagittarius A*," an international team of astrophysicists and researchers from the Event Horizon Telescope team announced on Thursday .
"It's the dawn of a new era of black hole physics," it added.
The black hole is often referred to as Sgr A*, pronounced sadge ay star . Its mass is about 4 million times that of the sun, and it's about 27,000 light years from Earth, according to MIT .
Black holes have long been a source of public fascination, but they also pose notorious challenges to researchers, mainly because their gravitational fields are so strong that they either bend light or prevent it from escaping entirely. But scientists have been able to detect and study them based on the powerful effects they exert on their surroundings.
In the case of Sgr A*, scientists have previously observed stars orbiting around the Milky Way's center. Now they have a direct view of what Feryal Özel, a professor of astronomy and physics at the University of Arizona, called the "gentle giant" itself.
Putting the size of the black hole into an Earthling's perspective, the team said that seeing it from the surface of our planet would be like trying to spot a donut on the moon.
"What made it extra challenging was the dynamic environment of Sgr A*, a source that burbled then gurgled as we looked at it," Özel said, "and the challenges of looking not only through our own atmosphere, but also through the gas clouds in the disk of our galaxy towards the center. It took several years to refine our image and confirm what we had, but we prevailed."
More than 300 researchers collaborated on the effort to capture the image, compiling information from radio observatories around the world. To obtain the image, scientists used observations from April 2017, when all eight observatories were pointed at the black hole.
"Although we cannot see the black hole itself, because it is completely dark, glowing gas around it reveals a telltale signature: a dark central region (called a 'shadow') surrounded by a bright ring-like structure," the EHT team said in its announcement.
The researchers announced the news Thursday morning at the National Press Club in Washington, D.C., but it was simultaneously released around the world, in a series of news conferences held in Mexico City, Shanghai, Tokyo, and other cities.
"We were stunned by how well the size of the ring agreed with predictions from Einstein's Theory of General Relativity," said EHT Project Scientist Geoffrey Bower , from the Institute of Astronomy and Astrophysics at the Academia Sinica in Taipei.
The discovery comes three years after the Event Horizon Telescope Collaboration released the first-ever image of a black hole — but that work focused on the center of galaxy Messier 87, tens of millions of light-years away from Earth in the Virgo cluster of galaxies.
Commenting on the similarities of the two images, of a dark shadow surrounded by a bright ring, Özel stated, "It seems that black holes like donuts."
Still, she said, the two black holes are very different from one another — for one thing, the Milky Way's black hole isn't as voracious.
"The one in M87 is accumulating matter at a significantly faster rate than Sgr A*," she said. "Perhaps more importantly, the one in M87 launches a powerful jet that extends as far as the edge of that galaxy. Our black hole does not."
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Image of Milky Way’s black hole marks new era in space science
May 13, 2022 6:40 PM EDT
https://www.pbs.org/newshour/show/image-of-milky-ways-black-hole-marks-new-era-in-space-science
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For decades scientists have believed there is a black hole at the center of our Milky Way galaxy. For the first time this week, they released an astonishing image of it, about 27,000 light years away from Earth. An international collaboration of scientists and telescopes made the discovery. Miles O'Brien explores some of the mysteries surrounding the black hole.
For decades, scientists have believed there is a black hole at the center of our galaxy, the Milky Way.
Yesterday, for the first time, they released a photograph of it, an astonishing sight. Its shadow is surrounded by light that is being bent by immense gravity coming from the black hole. And it is just about 27,000 light years away from Earth.
Miles O'Brien is here to explain some of the mysteries around all this.
So, Miles, tell us, what is the significance of this image?
We have seen a picture of a black hole before. The same team delivered a picture of a much larger black hole, M87, in 2019. But this one is at the center of our galaxy. And while it look — might look kind of benign there, there's a lot going on there. The gas is spinning around that black hole at impossibly difficult speeds to comprehend.
It has a mass that is four million times our sun. And the researchers were saying that, as they were looking at it, they could see it moving in minutes' time. They described it as burbling and gurgling. So it's a crazy place to be.
If you and I were there at the edge of that black hole and set foot in it, we would be spaghettified. So, it's kind of a mean place in our galaxy, kind of a tough neighborhood, but important for everything that is around us and makes us who we are.
How were they able to get this image in the first place.
They have a telescope the size of Earth.
So, I know that doesn't sound logical, but, basically, what they did was, they connected eight telescopes all over the planet, in pairs, and made sure they took observations at exactly the right moment, synchronized with atomic clocks. And then what they did was, they compiled all that data, collated all that information, and then used an algorithm to sort of fill in the gaps.
So it's kind of like you can imagine a piano keyboard with some keys missing. If you can fill in enough of those keys. You can figure out the tune. And so, basically, they figured out the tune using computational techniques that had never been done before.
It's quite — quite an amazing accomplishment of engineering.
And for the scientist, Miles, what makes this so important, so fascinating to them? I mean, do we worry about Earth getting sucked into this black hole?
No, we're in a safe neighborhood. Don't worry about that one.
But it is fascinating for a couple of things. First of all, this is probably the strongest proof yet of Einstein's theory of relativity, which goes back to 1915. He theorized that these things existed. And then, for the longest time, we looked and looked and didn't see them. In 1974, scientists found the spot where it was likely to be.
And now we have finally see it — seen it. And so that gives us this amazing validation of a scientific theory, in addition to being pretty darn cool on top of that.
The other thing that they found that was interesting is that it matched, in many ways, the image of M87, the other black hole that they imaged. It has that same doughnut pattern. So, that tells them that what they saw initially was not a fluke, not just a coincidence. And now they say they have seen an extraordinarily big black hole, an M87, and now they have looked at ours, and it's kind of a more run-of-the-mill black hole.
And so now that these scientists have this, Miles, what's next? What do they next want to do?
Well, we have got the selfie. Up next is the movie.
They're going to try to expand the number of telescopes on the surface of the Earth, so they can have another opportunity to image this black hole and others in greater detail, enough detail to capture the motion.
Basically, the time exposure was long enough that the motion around it, the gas that was spinning around that black hole, was blurred. It's just like shooting a waterfall in a time exposure.
So, with a few more telescopes on the surface of Earth, they should be able to freeze the action as it were and create movies. And then maybe, someday, they hope, we can put interferometers, these kinds of paired telescopes, into space, which will be, of course, much farther apart, and which would create a much bigger lens virtually, and who knows what we will find then.
By Seth Borenstein, Associated Press
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Kisskadee
Black Hole Era
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May 06, 2022
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By Austin Saalman
Through her maximalist neo-psychedelic chamber pop project Kisskadee , prolific singer/songwriter/multi-instrumentalist Kasie Shahbaz has created a work of exquisite beauty in the form of a grand cosmological inquiry, the origin and ultimate fate of the universe itself mirroring her own evolution from innocence to experience. Black Hole Era is a stunning song cycle, sonically diverse as Shahbaz explores her history through fragmented verses of fear, beguilement, erosion, and dissipation. Her lyrics lend life to their surroundings, from the grass and trees to the singer’s family and acquaintances. In a hypnagogic haze, she aims for wider soundscapes here, incorporating her classical sensibilities in crafting this rolling baroque fantasy of mortality and insensibility. The album’s sweeping strings, buzzing synths, and moody guitars flirt with numerous musical eras, with Shahbaz harnessing this eclectic range of influences into a singular sound and atmosphere all her own.
Introductory track “High as the Sky” finds Shahbaz in her nascent youth, mist enshrouding the earth, clearing with a music box tinkle and lullaby invocation, “She used to love me high/As high as the sky.” Subsequently, the fantastically terrifying realm of childhood is intimately depicted on the jazz-tinged “Ursula,” Shahbaz stating, “If I were a rose I’d be on Mars.” Remarkable in its versatility, “Ursula” possesses a suite-like structure, Shahbaz weaving in and out of confusion and bliss, exploring her relationship to nature and inevitable return to its embrace.
“Brother,” Black Hole Era ’s standout track, reveals Shahbaz’s tremendous songwriting and lyrical talents, its melody conjuring the warm firefly’s kiss of a purple June evening, deceptively masking the singer’s account of personal tragedy: “In the bathtub and on the door/I saw his wrists were bloody, bloody, bloody…” This orchestral fever dream of loss and memory stands easily among the year’s finest musical offerings, its cryptic lyrics somehow inspiring universal emotion: “The clouds were fast when they pushed you home/Back on the coast where you sleep in white foam/I wish you talked to me on the phone/You can hang my lungs from your highest dome” and “I’ve never seen such perfect bones/You ring out my skin when your eyes roll/My lunch and dinner are crumbs from your toast/Try to be kind when you ask me to go.” With her childhood and adolescence converging, the distant “wah-wah-wah” of her infancy haunting the backdrop like a specter half-forgotten, one cannot help but share in Shahbaz’s youthful melancholia as she declares, “People don’t love me anymore/People used to love me.”
Acoustic ode to ephemeral youth “Ice Cream” and meditation on mortality “Geist” are meticulous masterpieces, the imperative messages of Shahbaz’s lyrics masquerading behind each track’s rich prog pop curtain. On the latter, she sings, “Home to shed/Needs unmet/In the hole I bury my dead/I give up/Can’t you see?/To die’s the only way to fly free.” The stirring depth of her vivid proclamations places Shahbaz alongside the likes of Michelle Zauner (Japanese Breakfast) as one of her generation’s leading pop music intellectuals. In this respect, Black Hole Era is a much-needed genre experiment, with Shahbaz able to express her complex vision while maintaining sonic appeal. For evidence, look no further than the album’s bewitchingly apocalyptic title track. Here, Shahbaz experiences the rumblings of oblivion through a floral rush of baroque pining, singing, “The darkness is coming and I’m attuned/You hide from desire like a hole in the dark.”
Abandoning the title track’s epic scope, stark piano ballad “Supplication” finds Shahbaz drying out in the shade of her final dark star, an ominous energy swelling just beneath its tranquil surface as she sings, “I’ve been on my best behavior/I want you to come back.” Serving as something of a spiritual sibling to its predece
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