No. There is no way a black hole would eat an entire galaxy. The gravitational reach of supermassive black holes contained in the middle of galaxies is large, but not nearly large enough for eating the whole galaxy.
Is there an end to a black hole?
“Hawking said a black hole doesn’t last forever,” Finkbeiner said. Hawking calculated that the radiation would cause a black hole to lose energy, shrink and disappear, as described in his 1976 paper published (opens in new tab) in Physical Review D.
How will the universe end?
The Big Freeze. Astronomers once thought the universe could collapse in a Big Crunch. Now most agree it will end with a Big Freeze. If the expanding universe could not combat the collective inward pull of gravity, it would die in a Big Crunch, like the Big Bang played in reverse.
Can black holes sustain life?
Theorists say it’s technically possible, but it would be a weird place to live. Supermassive black holes have a reputation for consuming everything in their path, from gas clouds to entire solar systems.
Will a black hole destroy the universe? – Related Questions
Are black holes cold or hot?
Black holes are freezing cold on the inside, but incredibly hot just outside. The internal temperature of a black hole with the mass of our Sun is around one-millionth of a degree above absolute zero.
Are we living in black hole?
Our universe may reside within a vast, black hole. Let’s rewind the clock. Before humans existed, before Earth formed, before the sun ignited, before galaxies arose, before light could even shine, there was the Big Bang. This happened 13.8 billion years ago.
Can a black hole be destroyed?
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.
What would happen if a black hole made its way into our solar system?
As the black hole made its way through the Solar System, it would disrupt the orbits of all the planets in it. Likely, our space intruder would tangle the biggest planet in the system, Jupiter. The black hole would pull all the gas from the giant planet, turning it into a swirling hot disk.
Can a black hole act as a Sun?
But a satiated black hole effectively has zero temperature, barring a trickle of particles released by a process called Hawking radiation, meaning it could potentially act as a cold sun, says Opatrný.
Could a black hole work as a Sun?
Because the sun’s core is very small, the ergosphere would also be small — so small, in fact, that the planets would probably just continue to orbit in their usual manner. The black hole would have the same mass, and therefore the same gravity, as the original sun. Orbiting planets wouldn’t notice any difference.
Does a black hole make sound?
The sound waves were discovered in 2003, when, after 53 hours of observation, researchers with NASA’s Chandra X-Ray Observatory “discovered that pressure waves sent out by the black hole caused ripples in the cluster’s hot gas that could be translated into a note.”
What can escape a black hole?
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.
What is the closest black hole to Earth?
In 2020 a team led by European Southern Observatory (ESO) astronomers reported the closest black hole to Earth, located just 1000 light-years away in the HR 6819 system.
Who discovered Earth?
The first person to determine the size of Earth was Eratosthenes of Cyrene, who produced a surprisingly good measurement using a simple scheme that combined geometrical calculations with physical observations. Eratosthenes was born around 276 B.C., which is now Shahhat, Libya. He studied in Athens at the Lyceum.
Can Earth become a black hole?
Despite their abundance, there is no reason to panic: black holes will not devour Earth nor the Universe. It is incredibly unlikely that Earth would ever fall into a black hole. This is because, at a distance, their gravitational pull is no more compelling than a star of the same mass.
How far away is 1 light-year?
For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km).
Is the universe the biggest?
They found that the universe is at least 250 times larger than the observable universe, or at least 7 trillion light-years across.
How far can we see in space?
So the furthest out we can see is about 46.5 billion light years away, which is crazy, but it also means you can look back into the past and try to figure out how the universe formed, which again, is what cosmologists do.
How fast can we travel in space?
But Einstein showed that the universe does, in fact, have a speed limit: the speed of light in a vacuum (that is, empty space). Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second).
How long is 1 hour in space?
One hour on Earth is 0.0026 seconds in space.
Thus, upon calculation we find that one hour on Earth is equivalent to seven years in space. Einstein’s theory of Special Relativity stands as a explanation to this calculation.
Can humans survive light-speed?
So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.