No. There is no way a black hole would eat an entire galaxy. The gravitational reach of supermassive black holesOn the other end of the size spectrum are the giants known as "supermassive" black holes, which are millions, if not billions, of times as massive as the Sun. Astronomers believe that supermassive black holes lie at the center of virtually all large galaxies, even our own Milky Way.https://science.nasa.gov › focus-areas › black-holes
No, Moss says. The fact that the universe has been around 13.8 billion years shows that primordial black holes will not trigger such a collapse, he says. As for black holes at the LHC, even if they can be created they also won't create havoc, he says.
A single Black Hole, even one at the center of our Milky Way galaxy, is just too small to eat an entire galaxy.
"Black holes form inside their host galaxies and grow inproportion to them, forming an accretion disc which will eventually destroy thehost," he added. "In this sense they can be described as viral innature."
When two supermassive black holes collide during a merger of galaxies, we expect them to release gravitational waves – fluctuations in the fabric of spacetime.
Once they come so close that they cannot escape each other's gravity, they will merge to become one bigger black hole. Such an event would be extremely violent.
According to Einstein's general theory of relativity, the gravity of a black hole is so intense that nothing can escape it.
“When two galaxies start to merge, their central supermassive black holes sink to the center of this newly formed galaxy and eventually merge” into a single, bigger black hole, Chiara Mingarelli, an astrophysicist at the University of Connecticut and the Flatiron Institute's Center for Computational Astrophysics who ...
The universe is a vast expanse of space that contains all of everything in existence. The universe contains all of the galaxies, stars, and planets. The exact size of the universe is unknown.
Astronomers have found the first direct evidence that some quasars fuel their bright energy emissions by feeding on gas from external sources, probably neighboring galaxies.
The Milky Way hosts its own supermassive black hole at its center known as Sagittarius A* (pronounced “ay star”) that is more than four million times as massive as our sun. The tiniest members of the black hole family are, so far, theoretical.
While studying a nearby pair of merging galaxies scientists have discovered two supermassive black holes growing simultaneously near the center of the newly coalescing galaxy. These super-hungry giants are the closest together that scientists have ever observed in multiple wavelengths.
Since nothing can escape from the gravitational force of a black hole, it was long thought that black holes are impossible to destroy. But we now know that black holes actually evaporate, slowly returning their energy to the Universe.
The most powerful supernova yet recorded (ASSASN-15lh) was 22 trillion times more explosive than a black hole will be in its final moments. It doesn't matter how small or how massive a black hole is, their closing fireworks are exactly the same. The only difference is how long it will take a black hole to explode.
Inside what's known as the black hole's event horizon, not even light itself can escape from a black hole. But that doesn't mean that black holes will live forever; on the contrary, they slowly decay away due to a phenomenon known as Hawking radiation.
Two billion years from now, the Milky Way and Andromeda, our closest neighboring galaxy, will begin to fuse into one giant football-shaped galaxy.
The technology required to travel between galaxies is far beyond humanity's present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.
Andromeda–Milky Way collision
The merger will totally alter the night sky over Earth but will likely leave the solar system unharmed, according to NASA.
The comet has been described as "the single most dangerous object known to humanity". In 1996, the long-term possibility of Comet Swift–Tuttle impacting Earth was compared to 433 Eros and about 3000 other kilometer-sized objects of concern.
NGC 2336 is the quintessential galaxy — big, beautiful, and blue — and it is captured here by the NASA/ESA Hubble Space Telescope.
Black holes, the insatiable monsters of the universe, are impossible to kill with any of the weapons in our grasp. The only thing that can hasten a black hole's demise is a cable made of cosmic strings, a hypothetical material predicted by string theory.
New black hole simulations that incorporate quantum gravity indicate that when a black hole dies, it produces a gravitational shock wave that radiates information, a finding that could solve the information paradox.
Anything outside this surface —including astronauts, rockets, or light—can escape from the black hole. But once this surface is crossed, nothing can escape, regardless of its speed, because of the strong gravitational pull toward the center of the black hole.