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Stellar black holes result from the collapse of massive stars, and some have suggested that supermassive black holes form out of the collapse of massive clouds of gas during the early stages of the formation of the galaxy.Stellar black holes result from the collapse of massive stars, and some have suggested that
Supermassive black hole – Wikipedia
form out of the collapse of massive clouds of gas during the early stages of the formation of the galaxy.
Why are there black holes at the Centre of galaxies?
They are believed to be at the center of every galaxy because they have such gravitational power and strength that they can pull the rest of the dust, asteroids, planets and suns close to it. Everything that is just far enough away will form the galaxy, the rest is dinner for the black hole.
Do all galaxies have a black hole in the middle?
In fact, most galaxies have supermassive black holes, and that’s what Patreon supporter Steve Shaber wrote in to ask about: “[You’ve said] that most galaxies have a supermassive black hole at the center. Here’s the science behind the galaxies without a supermassive black hole at their centers.
What is the black hole in the middle of the universe?
The black hole is known as Sagittarius A* or Sgr A* and is 4.2 million times more massive than our sun. The supermassive hole and its enormous gravitational field governs the orbits of stars at the center of the Milky Way.
Is there a star at the center of every galaxy?
Although most of them are old red giant stars, the Galactic Center is also rich in massive stars. They seem to have all been formed in a single star formation event a few million years ago.
How did Einstein predict black holes?
Most famously, black holes were predicted by Einstein’s theory of general relativity, which showed that when a massive star dies, it leaves behind a small, dense remnant core. If a black hole passes through a cloud of interstellar matter, for example, it will draw matter inward in a process known as accretion.
Do wormholes exist?
Wormholes are consistent with the general theory of relativity, but whether wormholes actually exist remains to be seen. Theoretically, a wormhole might connect extremely long distances such as a billion light years, or short distances such as a few meters, or different points in time, or even different universes.
What is the biggest thing in the universe?
The largest known ‘object’ in the Universe is the Hercules-Corona Borealis Great Wall. This is a ‘galactic filament’, a vast cluster of galaxies bound together by gravity, and it’s estimated to be about 10 billion light-years across!.
What happens if you go into a black hole?
The event horizon of a black hole is the point of no return. Anything that passes this point will be swallowed by the black hole and forever vanish from our known universe. At the event horizon, the black hole’s gravity is so powerful that no amount of mechanical force can overcome or counteract it.
What are the 4 types of black holes?
There are four types of black holes: stellar, intermediate, supermassive, and miniature. The most commonly known way a black hole forms is by stellar death. As stars reach the ends of their lives, most will inflate, lose mass, and then cool to form white dwarfs.
Will a black hole come to Earth?
Thankfully, black hole collisions are likely rare. In the most “optimistic” scenario — optimistic by the scientists’ standards, that is, so populating the galaxy with the maximum number of black holes — there might be one collision or so every billion years, according to the paper’s calculations.
Will the sun become a black hole?
However, the Sun will never turn into a black hole, because it is said to have less mass than needed to turn into one. When the Sun is about to reach its end and run out of its fuel, it will automatically throw off outer layers turning into a glowing gas ring known as a “planetary nebula”.
Is there a center of the universe?
In general, the galaxies along any line of sight from Earth are distributed in the same way. There is no “preferred” direction in the universe, which indicates that there is no inherent center of the universe.
Is there a massive black hole at the center of the galaxy?
For several years the scientific community has agreed that there is a mass at the center of the Milky Way galaxy and that the mass is a supermassive black hole—it has been named Sagittarius A*.
Why is the center of the Milky Way so bright?
The object hosts a fearsome magnetic field as well, and it’s this force that drags charged particles like electrons spiraling inwards, making them glow. Dust stops visible light from making it all the way to Earth, some 26,000 light years out in the disk, but infrared radiation can get around it.
Who was the first person to talk about black holes?
Albert Einstein first predicted the existence of black holes in 1916, with his general theory of relativity. The term “black hole” was coined many years later in 1967 by American astronomer John Wheeler.
What’s inside a black hole?
HOST PADI BOYD: While they may seem like a hole in the sky because they don’t produce light, a black hole is not empty, It’s actually a lot of matter condensed into a single point. This point is known as a singularity.
Did Einstein believe in black holes?
Over a century ago, Albert Einstein predicted that the gravitational pull of black holes were so strong that they should bend light right around them. Black holes don’t emit light, they trap it; and ordinarily, you can’t see anything behind a black hole.
Can time be bent?
Spacetime, however, is the combined concepts of space and time into a four-dimensional continuum. You may have even seen spacetime portrayed as a fabric, manipulated by energy. If spacetime can be bent, Beacham continued, it’s theoretically possible that time can be bent.
Is it possible to travel back in time?
General relativity. Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, traversable wormholes, and Alcubierre drives.
Why is travel through a wormhole impossible?
A Harvard physicist has shown that wormholes can exist: tunnels in curved space-time, connecting two distant places, through which travel is possible. “It takes longer to get through these wormholes than to go directly, so they are not very useful for space travel,” Jafferis said.
