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Black hole

Black hole

Black holes do not just bend the stage, they are like trap doors. Places with so much mass that the universe formed a 'no-go' zone where the rules change.

  • Most black holes form when very massive stars die. In the final moments of really massive stars, there insides implode, at nearly a quarter of the speed of light.
  • This pack so much mass, so close together that it creates something so dense that it sort of breaks the stage of the universe forming a black hole.

114

889 reads

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Space and time

Space and time

Space and time are the grand stage where the play of the universe unfolds. But space isn't a fixed stage and doesn't tick the same for everyone everywhere. In short, they are relative. Matter bends space and bent space tells matter how to move.

  • Put some stars and ...

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1.57K reads

Inside a big black hole

Inside a big black hole

If you got to the center of a galaxy and find a massive black hole, you might be able to experience crossing the event horizon.

  • As you approach the event horizon, a distant observer would think they never saw you enter it, seeing you stop and fade.

108

399 reads

so what will happen with black holes as the universe ages and dies around them?

so what will happen with black holes as the universe ages and dies around them?

So what will happen with black holes as the universe ages and dies around them?

  • Again, we don't know but we have some ideas based on our current understanding of physics: Hawking radiation.
  • In quantum field theory the vacu...

111

368 reads

Theoretical black holes

Theoretical black holes

Also, basically everything you've ever read about black holes, is about theoretical black holes that aren't spinning, because their math is so much easier.

  • But since black holes are born from dying stars that were spinning extremely quickly in their final moments,...

110

385 reads

Singularity

Singularity

In the center of the black hole, we find the singularity. A single point with all the matter that has ever crossed the event horizon, all crushed to a point infinitely small.

  • There is no memory of the things that made it as stuff disapears down the black hole tra...

110

403 reads

Ergosphere

Ergosphere

The singularities of rotating black holes are even wilder. The rotation causes them to swell outwards into a sort of rinularity.

This rotation is so powerfull, that space itself is dragged along.

  • This creates another region around spinning b...

107

348 reads

Event horizon

Event horizon

If you look directly at a black hole it looks like nothing. the space is under their control is blocked by an invisible one way border called the event horizon.

The event horizon forms a sheel around a region of space that, once entered, is shielded from the rest o...

108

715 reads

Spaghettification

Spaghettification

But getting close to a black hole can be incredibly dangerous. A painful death by 'spaghettification' awaits you.

Because you feet are closer to the black hole than your head they feel a stronger pull of gravity, enough to pull you apart.

  • A...

110

436 reads

What would happen if you would try to get close to a black hole?

What would happen if you would try to get close to a black hole?

First of all, you would see the strangest funhouse mirror in the universe. Matter isn't the only thing orbiting a black hole: Gravity is so strong near them that light can orbit too. 

  • If you hovered just outside the event horizon, at the photon sphere, in any direc...

111

558 reads

Acceretion disk

Acceretion disk

We can still observe black holes because of ther effect on matter. Things can orbit black holes just as they can orbit the sun or a planet.

  • Many black holes have discs of matter orbiting outside the event horizon.
  • This matter can become incredibly...

111

560 reads

Will we ever truly understand black holes? Really know whats going on inside them?

Will we ever truly understand black holes? Really know whats going on inside them?

No one knows. We can only see their outsides, and the theories we have probably get their insides wrong.

But it's okay not to now everything. It just means there is still work to be done. It means there are still mysteries to be solved and big dead to t...

107

352 reads

Gravity alters time

Gravity alters time

Gravity also alters the passage of time itself. The stronger the gravity the slower time passes. While you watch the universe above you speed up, those far away will watch you in slow motion.

  • If you chose to fly away from the black hole, you might find that eons ha...

111

531 reads

Hawking radiation

Hawking radiation

When this happens near the event horizon of a black hole, one of these particles call fall in, stopping them from annihilating.

  • The escaping particle is hawking radiation. ultimately the mass of this particle must come from the black hole, so over eons black holes...

107

302 reads

time for a black hole to dissapear

time for a black hole to dissapear

A black hole the mass of our sun has a lifetime of 10^67 years. Which means that it would take:

  • 10,000 billion, billion, billion, billion, billion, billion years, to lose 0.0000001% of its mass.
  • But most black holes are way more massive than our s...

110

348 reads

Three properties

Three properties

This lack of memory of its past, means that a black hole has only three properties its:

  • Mass
  • Spin
  • Electric charge

Everything else is lost. They're a lot like fundamental particles in that respect. This actually means that every singl...

110

384 reads

<p>Just like fundamental parti...

Just like fundamental particles, the properties of singularrities are the best ways we can describe them on paper, rather than an accurate representation of reality. 

Our current theories about the universe, namely general relativity are just not able to descrive or explain them.

108

342 reads

CURATED FROM

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rogierhoekstra

I'm passionate about helping people live their best lives. I'm a lifestyle coach and fitness trainer, and I also write and take photographs. Check out the link below for more and follow me on twitter!

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time for a black hole to dissapear

time for a black hole to dissapear

A black hole the mass of our sun has a lifetime of 10^67 years. Which means that it would take:

  • 10,000 billion, billion, billion, billion, billion, billion years, to lose 0.0000001% of its mass.
  • But most black holes are way more massive than our s...

Could a black hole destroy earth?

Could a black hole destroy earth?

Black holes do not go around in space eating stars, moons and planets. 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 no...

Theoretical black holes

Theoretical black holes

Also, basically everything you've ever read about black holes, is about theoretical black holes that aren't spinning, because their math is so much easier.

  • But since black holes are born from dying stars that were spinning extremely quickly in their final moments,...

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