How big would Earth be if it was a black hole?

After just a few minutes more — 21 to 22 minutes total — the entire mass of the Earth
mass of the Earth
, where ⊕ is the standard astronomical symbol for Earth), is a unit of mass equal to the mass of the planet Earth. The current best estimate for the mass of Earth is M = 5.9722×1024 kg, with a relative uncertainty of 104. It is equivalent to an average density of 5515 kg/m3.
https://en.wikipedia.org › wiki › Earth_mass
would have collapsed into a black hole just 1.75 centimeters (0.69”) in diameter: the inevitable result of an Earth's mass worth of material collapsing into a black hole. When matter collapses, it can inevitably form a black hole.


What size would a black hole be if it was the same mass as Earth?

A black hole with a Schwarzschild radius of about a centimeter, which would make it about the size of a coin, would have about the same mass as the Earth.

Can Earth fit in a black hole?

Earth will not fall into a black hole because no black hole is close enough to the solar system for Earth to do that. Even if a black hole the same mass as the sun were to take the place of the sun, Earth still would not fall in.


How small would Earth need to be to become a black hole?

The only requirement is that its physical size is less than the Schwarzschild radius. For example, our Sun would become a black hole if its mass was contained within a sphere about 2.5 km across. Our Earth would need to be compressed to a size smaller than 1.77 cm across (diameter).

What can destroy a black hole?

Eventually, in theory, black holes will evaporate through Hawking radiation. But it would take much longer than the entire age of the universe for most black holes we know about to significantly evaporate.


What If Earth Were Sucked Into a Black Hole?



What would happen if 2 black holes collide?

It is possible for two black holes to collide. 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.

Would falling into a black hole be painful?

The fate of anyone falling into a black hole would be a painful “spaghettification,” an idea popularized by Stephen Hawking in his book “A Brief History of Time.” In spaghettification, the intense gravity of the black hole would pull you apart, separating your bones, muscles, sinews and even molecules.

Can anything exist inside a black hole?

Anything that passes the event horizon is trapped within the black hole. But right as gas and dust get closer and closer to the event horizon, the gravity from the black hole makes them spin really fast … forming lots of radiation.


Do black holes make sound?

NASA has released a haunting audio clip of sound waves rippling out of a supermassive black hole, located 250 million light-years away. The black hole is at the center of the Perseus cluster of galaxies, and the acoustic waves coming from it have been transposed up 57 and 58 octaves so they're audible to human hearing.

Does time stop in a black hole?

Near a black hole, the slowing of time is extreme. From the viewpoint of an observer outside the black hole, time stops. For example, an object falling into the hole would appear frozen in time at the edge of the hole.

Is space infinite?

There's a limit to how much of the universe we can see. The observable universe is finite in that it hasn't existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding).


Will our Sun become a black hole?

Will the Sun become a black hole? No, it's too small for that! The Sun would need to be about 20 times more massive to end its life as a black hole.

Which is the biggest thing in universe?

The biggest single entity that scientists have identified in the universe is a supercluster of galaxies called the Hercules-Corona Borealis Great Wall. It's so wide that light takes about 10 billion years to move across the entire structure.

How many black holes are in the Milky Way?

Astronomers estimate that 100 million black holes roam among the stars in our Milky Way galaxy, but they have never conclusively identified an isolated black hole.


What's bigger than the universe?

No, the universe contains all solar systems, and galaxies. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy, and the universe is made up of all the galaxies – billions of them.

Are you still alive in a black hole?

Nothing escapes a black hole. Any trip into a black hole would be one way. The gravity is too strong and you could not go back in space and time to return home. Aside from this, your body would be stretched and destroyed by the warping of space and the amount of radiation surrounding the event horizon.

What's beyond a black hole?

At the center of a black hole the gravity is so strong that, according to general relativity, space-time becomes so extremely curved that ultimately the curvature becomes infinite. This results in space-time having a jagged edge, beyond which physics no longer exists -- the singularity.


Do wormholes exist?

Wormholes are shortcuts in spacetime, popular with science fiction authors and movie directors. They've never been seen, but according to Einstein's general theory of relativity, they might exist.

How long would you live if you fell into a black hole?

Sorry, science fiction fans. You can't actually survive a trip through a black hole. And if you tried to take a plunge into one, like Matthew McConaughey in the movie Interstellar, you'd be ripped apart long before you could find out what's on the other side.

What is the closest black hole to Earth?

Gaia BH1 is the closest black hole to Earth that scientists have ever discovered. It is approximately three times closer to Earth than the previous record holder. By looking at the behavior of a star near the black hole, astronomers could determine the black hole was there, despite never seeing it directly.


Do white holes exist?

A white hole is a black hole running backwards in time. Just as black holes swallow things irretrievably, so also do white holes spit them out. White holes cannot exist, since they violate the second law of thermodynamics.

Could scientists accidentally make a black hole?

You have almost nothing to fear from black holes. Of course, “almost” nothing isn't the same as absolutely nothing. And that means, theoretically speaking, there's at least a greater-than-zero-percent chance that scientists could accidentally create a dangerous black hole in a laboratory.

What is inside a black hole?

Black holes have two parts. There is the event horizon, which you can think of as the surface, though it's simply the point where the gravity gets too strong for anything to escape. And then, at the center, is the singularity. That's the word we use to describe a point that is infinitely small and infinitely dense.