Search results
Apr 10, 2019 · See the first picture of a black hole at the center of the galaxy M87, captured by the Event Horizon Telescope. Learn what a black hole is, how it forms, and how it affects its surroundings.
- How Scientists Captured the First Image of a Black Hole
How Scientists Captured the First Image of a Black Hole. By...
- Black Hole Image Makes History; NASA Telescopes Coordinated ...
The stunning new image shows the shadow of the supermassive...
- How Scientists Captured the First Image of a Black Hole
May 12, 2022 · The Event Horizon Telescope Collaboration, led by Harvard scientists, reveals the first direct image of Sagittarius A*, the supermassive black hole at the center of our galaxy. The image confirms Einstein's theory of relativity and shows how black holes shape galaxies.
May 12, 2022 · On May 12, 2022, scientists unveiled the first-ever image of Sagittarius A*, the supermassive black hole at the center of our Milky Way galaxy. The historic image of Sagittarius A* (or Sgr A* for ...
- Overview
- Orange on the moon
- Stunning Pictures of Space and Its Wonders
- 6.5 Billion Splendid Suns
- Jet setter
- GeneratedCaptionsTabForHeroSec
Using a telescope the size of the planet, astronomers have captured the first image of this space oddity. Here's why that matters.
More than 50 million light-years away, in the heart of a giant elliptical galaxy called Messier 87, a gargantuan beast is devouring anything that strays too near. Stars, planets, gas, and dust—not even light escapes the monster’s grasp once it crosses a threshold called the event horizon.
Today, scientists unveiled an image of that object, a supermassive black hole containing the same mass as 6.5 billion suns. Resembling a circular void surrounded by a lopsided ring of light, this landmark image is the world’s first glimpse of a black hole’s silhouette, a picture that creeps right up to the inescapable edge of the black hole’s maw.
2:55
The new image is the stunning achievement of the Event Horizon Telescope project, a global collaboration of more than 200 scientists using an array of observatories scattered around the world, from Hawaii to the South Pole. Combined, this array acts like a telescope the size of Earth, and it was able to collect more than a petabyte of data while staring at M87’s black hole in April 2017. It then took two years for scientists to assemble the mugshot.
Before now, humans could only see indirect evidence that black holes even existed by looking for stars that seemed to orbit bizarre objects, by capturing radiation from the superheated matter swirling into them, or by seeing the extremely energetic jets of particles launched from their tumultuous environments. (Recently, astronomers caught their first glimpse of what seems to be a star becoming a black hole.)
The Event Horizon Telescope initially set out to snag an image of the supermassive black hole at the core of our galaxy, the Milky Way. Called Sagittarius A*, that black hole is relatively puny compared to M87, containing the mass of just four million suns. Because M87 is one of the nearest, biggest black holes, the team also decided to aim the telescope there, hoping to eventually compare the two bruisers.
Seeing into the heart of our galaxy turned out to be a bit more complicated than staring down the barrel of a black hole in the next galaxy cluster over, which is why M87’s portrait is out first.
1 / 44
1 / 44
Over its lifetime, NASA's Hubble Space Telescope has captured many stunning images. Among the most memorable is this edge-on mosaic of the Sombrero galaxy . With its relatively high brightness magnitude and at a distance of 28 million light-years from Earth, Messier 104, as Sombrero is more formally known, is easily viewed through a small telescope.
Over its lifetime, NASA's Hubble Space Telescope has captured many stunning images. Among the most memorable is this edge-on mosaic of the Sombrero galaxy. With its relatively high brightness magnitude and at a distance of 28 million light-years from Earth, Messier 104, as Sombrero is more formally known, is easily viewed through a small telescope.
Photograph courtesy NASA and the Hubble Heritage Team (STScI/AURA)
To resolve these supermassive black holes—which are tiny compared to their surrounding galaxies—the consortium needed to harness the power of radio telescopes all over the planet. In the end, six observatories in Mexico, Hawaii, Arizona, Chile, and Spain aimed their eyes into sky and stared at M87, which is the biggest galaxy in the center of the Virgo cluster. Functioning as one Earth-sized telescope, the network can resolve objects just one-ten thousandth the angular size of what Hubble can see.
With the image in hand, scientists can now start to probe some of the deeper mysteries of the physics of black holes, including confirming their foundational underpinnings.
“What we’d really like to know from these observations is, are the properties of these black holes really what we expect if Einstein is right?” Rees says.
No one really knows what, if anything, is at the core of a black hole, called the singularity. This puncture in the very fabric of the universe is surrounded by a curved, exotic expanse of space-time from which nothing escapes.
However, the new image should help astronomers hoping to understand more about the outside of M87, especially its fountains of extremely energetic particles traveling at nearly the speed of light. Spanning about 4,900 light-years, M87’s visible jet is one of the more eye-catching spectacles in the nearby universe.
A black hole blasting matter into space might sound paradoxical, given that they generally tend to inhale matter, but these exotic objects are nothing if not baffling.
“It seems like they are just as good at pushing material away—jets, winds, and outflows—as they are at collecting material,” says Daryl Haggard of McGill University, noting that scientists really have no clear idea about how black holes actually power jets.
Seeing the interface between light, matter, and M87’s event horizon might help scientists work out this enigmatic process. Multiple observatories previously aimed their eyes at the black hole and tried to untangle the engine behind its jet, studying it in wavelengths spanning the electromagnetic spectrum.
Such jets seem to originate from the disk of matter swirling around the event horizon, in a region called the ergosphere, Markoff says. Here, space-time never stands still and is perpetually rotating. It’s an environment characterized by intense magnetic field lines, gases heated to millions of degrees, and particles zipping around almost impossibly quickly. Interactions between those elements on microscopic scales somehow unleash the enormous power contained in the jets.
See the stunning image of a supermassive black hole and its shadow, captured by a global network of radio telescopes. Learn how scientists achieved this landmark feat and what it reveals about the nature of these cosmic monsters.
People also ask
What is a black hole?
What is the first image of a black hole?
Where is the supermassive black hole located?
Does a black hole cast a shadow?
Apr 10, 2019 · The EHT collaboration has produced a picture of the event horizon of a supermassive black hole at the centre of galaxy M87, using a global network of radio telescopes. The image shows a ring of fire created by the deformation of space-time, and confirms the predictions of general relativity.
- Davide Castelvecchi
- 2019
