Astrophysicists have devised a way to use the shadow of a supermassive black hole, shown in a simulation here, to test and rule out novel theories of gravity.
Outwitting Albert Einstein just got even tougher. More than 100 years ago, the famous physicist published his explanation of gravity, known as general relativity (GR), which successfully explains everything from the orbits of planets to the bending of starlight. Still, some physicists have been trying to invent theories that can solve puzzles GR cannot—for example, by explaining away the need for invisible dark matter, whose gravity appears to bind the galaxies.
Not to change the topic here:
No, There Isn't A Black Hole At The Center Of The Earth
Although it's a fascinating theoretical possibility that miniature black holes might exist, there is ... [+] not only no evidence for their existence, but no possibility that they could grow and devour the Earth, as their decay rate is too large, even in the speculative presence of a large extra dimension.
But there's a fascinating opportunity here as well: to expose the real science behind why someone would be interested in the notion that the center of the Earth could contain a black hole. It's a wild idea that isn't necessarily based in nonsense, but the data we've collected has thoroughly demonstrated that there isn't a black hole at the center of the Earth. Here's the story of how we scientifically know that the Earth's interior is black hole-free.
Raiders' infamous Black Hole cheering section | Las Vegas Review-Journal
That is the location of the infamous Black Hole cheering section, although cheering probably isn’t the right word to describe what the Black Hole does.
The Raiders had just blown a big lead against the Jacksonville Jaguars, and those adorned with face paint, spiked shoulder pads and spilled beer were none too pleased.
A beer can whizzed past my ear. It detonated with a dull thud, oozing a puddle of foam on the 8 yard line. That was followed by a salvo of nachos that fluttered to earth in the end zone, followed by a couple of intoxicated guys who basically did the same.
The Greek Scientist Confirming Einstein with his Black Hole Study | USA.GreekReporter.com
The first image of a black hole, captured in 2019 by the team of Greek astronomer Dimitrios Psaltis, has revealed more support for Albert Einstein’s theory of general relativity.
The image measures the Messier87 (M87) black hole which is 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 kilometers away from the earth and was photographed by a network of eight telescopes across the world, coordinated by the Event Horizon Telescope (EHT) project. The EHT is a consortium of more than 200 scientists who have been consulting on the massive project for about two decades.
Other things to check out:
Harvard Researchers Discover Wobbling Shadow of Supermassive Black Hole | News | The Harvard
Harvard Business School Will Rename Building after James Cash, School's First Tenured Black Professor
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A year after scientists unveiled the first-ever image of the shadow of the Messier 87 (M87*) black hole, Harvard astrophysicists have made yet another discovery — the crescent-like shadow of that black hole appears to be wobbling.
In a report published on Sept. 23, the group — led by Black Hole Initiative Postdoctoral Fellow Maciek Wielgus — analyzed data collected by the Event Horizon Telescope (EHT) over the past decade. The researchers combined this archival data with mathematical models to simulate the changes in the flow of matter around M87* over the timescale of months and years.
Very Large Telescope finds 6 galaxies trapped in web of supermassive black hole - UPI.com
Oct. 1 (UPI) -- Using the Very Large Telescope, a powerful observatory in Chile, astronomers have identified six galaxies trapped in the web of a supermassive black hole when the universe was just 900 million years old.
The discovery, described Thursday in the journal Astronomy and Astrophysics , helps explain how supermassive black holes got so big so soon after the Big Bang. Advertisement
"This research was mainly driven by the desire to understand some of the most challenging astronomical objects -- supermassive black holes in the early universe," lead study author Marco Mignoli said in a news release.
News | 'Echo Mapping' in Faraway Galaxies Could Measure Vast Cosmic Distances
When you look up at the night sky, how do you know whether the specks of light that you see are bright and far away, or relatively faint and close by? One way to find out is to compare how much light the object actually emits with how bright it appears. The difference between its true luminosity and its apparent brightness reveals an object's distance from the observer.
In a new study, astronomers used a technique that some have nicknamed "echo mapping" to measure the luminosity of black hole disks in over 500 galaxies. Published last month in the Astrophysical Journal , the study adds support to the idea that this approach could be used to measure the distances between Earth and these faraway galaxies.
"Echo Mapping" Light Bursts From Supermassive Black Holes in Faraway Galaxies to Measure Vast
Matter swirling around supermassive black holes creates bursts of light that “echo” in nearby dust clouds. These traveling signals could serve as a new cosmic yardstick.
When you look up at the night sky, how do you know whether the specks of light that you see are bright and far away, or relatively faint and close by? One way to find out is to compare how much light the object actually emits with how bright it appears. The difference between its true luminosity and its apparent brightness reveals an object’s distance from the observer.
Happening on Twitter
I am trying to translate the famous philosophical song of Yesudas written by Kerala's famous writer-Late Vayalar Ra… https://t.co/AhH6OOhFt1 jgopikrishnan70 (from New Delhi) Sun Oct 04 18:09:10 +0000 2020
Einstein was right — again. The shape of the first black hole image provides the most precise match yet to certain… https://t.co/WNCuDO5Rdb QuantaMagazine Fri Oct 02 22:18:21 +0000 2020
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