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Q&A

Posts tagged black-holes

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Q&A How would one destroy a black hole?

Science-Fiction has tools to destroy anything: atoms, molecules, DNA, cellular organisms, multicellular organisms, buildings, streets, cities, countries, continents, planets, and even stars. Some e...

14 answers  ·  posted 8y ago by Nzall‭  ·  last activity 6y ago by Nzall‭

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Q&A On an Ice Planet orbiting a Black Hole, could Jungles live in Geothermal Pockets?

The Rygyphae are a species that lives in the geothermal pockets, areas heated by volcanic activity. The rest of the planet is nothing but frozen ice and rock, but these pockets are lush jungles ful...

2 answers  ·  posted 6y ago by Sydney Sleeper‭  ·  last activity 6y ago by Sydney Sleeper‭

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Q&A How much artificial gravity could create a black hole?

In my world, people have powers based on the four fundamental forces. One of my characters can generate spontaneous gravity to crush his opponents. He's also resistant to his own power (so I ignor...

3 answers  ·  posted 6y ago by Eli Gauthier‭  ·  last activity 6y ago by Eli Gauthier‭

Question gravity black-holes
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Q&A Could black holes be a better source of energy than stars?

In my story, set in the far(ish) future, humanity discovers a way to extract energy from black holes (perhaps via the Penrose process?), which sparks conflict as various factions attempt to take co...

7 answers  ·  posted 6y ago by the_nacho‭  ·  last activity 6y ago by the_nacho‭

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Q&A Observing the age of the Universe when orbiting a black hole

Imagine a civilization developing on Planet X that is orbiting a black hole (or a similar gravitationally massive object). Given the time dilation near such a massive object, do the inhabitants of ...

4 answers  ·  posted 7y ago by Klangen‭  ·  last activity 6y ago by Klangen‭

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Q&A How safe would be living in a space-time highly distorted planet

Imagine a planet - henceforth Planet X - that is orbiting very close to a black hole. The space-time distortion will be very high there and according to the theory of relativity, the time there wil...

1 answer  ·  posted 6y ago by Daniel Ortega‭  ·  last activity 6y ago by Daniel Ortega‭

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Q&A Spaceship orbiting a black hole under the event horizon - a prison where no one escapes

The relationship between the distance, $d$, of the event horizon from a black hole's center and the tidal acceleration, $a$, experienced by an object near a black hole allows for scenarios in which...

6 answers  ·  posted 6y ago by Austin A‭  ·  last activity 6y ago by Austin A‭

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Q&A How could a Wormhole be transported?

In my universe, humanity has learned how to open wormholes for transportation, how they are opened is irrelevant and can be hand-waved, what must be kept in mind is that when they are opened, two e...

1 answer  ·  posted 6y ago by Ravi Mattar‭  ·  last activity 6y ago by Ravi Mattar‭

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Q&A The Source of Gravity Based Destruction

The Background: It's the year 4000 (or whatever), and mankind has cheated FTL travel. As a result of this 'cheating' rather than solving, however, they can't easily go beyond their borders. Howe...

7 answers  ·  posted 6y ago by Mackenzie Bodily‭  ·  last activity 6y ago by Mackenzie Bodily‭

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Q&A Reasons for time dilation to happen on a habitable planet with same g force and not orbiting a black hole

I wish to clarify my doubts regarding time dilation Is it possible for a planet to be habitable like Edmund's planet from interstellar, which has somewhat similar gravitational force as Earth (9....

4 answers  ·  posted 6y ago by Peaceman‭  ·  last activity 6y ago by Peaceman‭

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Q&A What type of black hole/rip in the universe would swallow the solar system within 1-10-100 years?

If an FTL experiment created a black hole or keugleblitz within 100 au or less of our sun, what would it's post creation statistics have to be to consume the majority of our solar system within 10 ...

1 answer  ·  posted 6y ago by PCSgtL‭  ·  last activity 6y ago by PCSgtL‭

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Rigorous Science Would it be possible to have a small black hole dissipate as it 'sinks' into the earth?

I recently watched this Kurzgesagt video exploring the question of what would happen if you had a black hole the size of a coin. To summarize the video: A black hole with the MASS of a coin wo...

1 answer  ·  posted 6y ago by Harrenhal‭  ·  last activity 6y ago by Harrenhal‭

Question black-holes
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Q&A Travelling through a black hole like through a wormhole?

To add to my previous question. Can a black hole be a wormhole or can a wormhole exist within a black hole? The result I want to get is this: You enter a black hole in one part of space and exit ...

2 answers  ·  posted 6y ago by SovereignSun‭  ·  last activity 6y ago by SovereignSun‭

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Q&A Are gamma rays always harmful?

Two days ago I asked how we can detect a (really) small black hole. The best answer (to me) was "gamma rays". Since this black hole is relatively close to our planet (a few AUs), this could be a pr...

5 answers  ·  posted 6y ago by Lupetto‭  ·  last activity 6y ago by Lupetto‭

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Q&A How far could life develop inside a black hole before it explodes?

Apparently it is theoretically possible for a planet to achieve a stable orbit around the singularity at the centre of a black hole within the event horizon. This means that life could hypothetical...

8 answers  ·  posted 9y ago by overactor‭  ·  last activity 6y ago by overactor‭

Question space black-holes
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Rigorous Science Smallest Black Hole to 'heat' a Gas Giant

So I want a large power source to heat my new real estate on the Jovian moons. I create a micro black hole (MBH), maybe a few kg, maybe more and drop it into Jupiter. I expect the following to h...

2 answers  ·  posted 7y ago by mart‭  ·  last activity 7y ago by mart‭

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Q&A How can black holes be used for daredevil gravity slingshot sport?

This is set in the same universe as my Andromeda galactic war question (same tech level). In this question, I had somewhat purposely labelled the galactic core as "off-limits" (black holes and oth...

3 answers  ·  posted 7y ago by System‭  ·  last activity 7y ago by System‭

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Q&A What exactly would happen if a black hole was introduced into the sun?

A ship powered by a black hole of a few hundred thousand tons (say, under $6 \times10^8$ kg, which would have a lifetime of several years and a power output of a few hundred petawatts) crashes (mal...

1 answer  ·  posted 7y ago by Tharaib‭  ·  last activity 7y ago by Tharaib‭

Question black-holes
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Q&A Escaping a pair of orbiting black holes through the saddle

Imagine a pair of black holes in orbit around each other. I'm wondering how this would distort their mutual event horizons. In fact would it be possible to "break" the event horizons by reducing th...

1 answer  ·  posted 7y ago by Tim B‭  ·  last activity 7y ago by Tim B‭

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Q&A Could you 'deconstruct' a blackhole by firing heavy metals into its orbit?

Using the process of 'pair production' and using the nature of a blackhole to separate and destroy one of the particles from that pair, would surrounding blackholes with heavy metals (which increas...

4 answers  ·  posted 7y ago by equilibriator‭  ·  last activity 7y ago by equilibriator‭

Question black-holes
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Rigorous Science Racing Around the Edge of a Black Hole

I am trying to understand the physics of an interstellar race. Say two ships are racing past a black hole as if it were a corner on a race track. One of the ships takes a hard line and comes very ...

3 answers  ·  posted 9y ago by John Watmuff‭  ·  last activity 7y ago by John Watmuff‭

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Rigorous Science How structurally strong would an object need to be to survive a trip through an ergosphere?

Let us assume we have a Kerr metric (rotating) black hole of 10 Sol-masses, spinning at 300 revs/s (as measured by a rest frame observer). What yield strength (assume that yield strength is limiti...

1 answer  ·  posted 7y ago by Shalvenay‭  ·  last activity 7y ago by Shalvenay‭

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Q&A What density can I set for Uium, to be reshaped by moon-mass black/white holes

How do you cut through an unbreakable armor? With an all-powerful sword, of course. No really, if we had seemingly unbreakable matter (lets give it the original name of Unobtadamentium, or Uium for...

1 answer  ·  posted 7y ago by Nahshon paz‭  ·  last activity 7y ago by Nahshon paz‭

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Q&A Assuming there was a spaceship that could counter-act the effects of falling into a black hole, could a human observe the hole dissipating?

The most common explanation of what would happen to a space-ship that falls into a black hole ends with spaghettification. However imagine there was a space-ship built out of unobtanium, that cou...

1 answer  ·  posted 7y ago by JonathanReez‭  ·  last activity 7y ago by JonathanReez‭

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Q&A Harnessing energy from a Black Hole

If a race were advanced enough to colonise space and travel between galaxies, would it be possible for them to harness a black hole in some way to generate power for the massive ships needed to col...

2 answers  ·  posted 7y ago by Lord Thanatos‭  ·  last activity 7y ago by Lord Thanatos‭

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Q&A Is there a practical method of storing a kugelblitz?

Could a kugelblitz be stored in a container lined with metamaterials to reflect back the outpouring of hawking radiation or would it require something more exotic? Could it be pinned in the center ...

1 answer  ·  posted 7y ago by Joe Kissling‭  ·  last activity 7y ago by Joe Kissling‭

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Q&A Generating power using a black hole's accretion disk?

Could you power a starship by feeding matter into a black hole and collecting the plasma produced by the tidal forces ripping apart whatever you fed it, or is this impossible/impractical? I keep re...

1 answer  ·  posted 7y ago by Z.Schroeder‭  ·  last activity 7y ago by Z.Schroeder‭

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Q&A Travel (how far?) into the future using a black hole and light-speed space craft?

A person is traveling in a space craft that was designed and built by sufficiently advanced aliens. This space craft left from Earth and is capable of traveling infinitely close to the speed of lig...

5 answers  ·  posted 7y ago by jakecento‭  ·  last activity 7y ago by jakecento‭

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Q&A What would happen to a planet 10x the size of Jupiter, if there was a golf ball sized black hole in its core?

What would happen to to a planet 10 times the size of Jupiter, if there was a black hole the size of a golf ball in the core of the planet? Would the planet be eaten by the black hole? Or would t...

3 answers  ·  posted 8y ago by Stefan‭  ·  last activity 7y ago by Stefan‭

Question planets black-holes
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Q&A Does this SciFi plot about quantum singularity violate laws of physics?

I'm writing a science fiction, although I'm not from a physics background. A part of my plot is: In a futuristic Earth threatened by huge power demand and climate change, a scientist creates a qua...

4 answers  ·  posted 7y ago by Bagho‭  ·  last activity 7y ago by Bagho‭

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Rigorous Science Would the Hawking radiation from a small black hole make a feasible propulsion source?

I was wondering if a small black hole would make a feasible/possible propulsion source, and if so, how. Pros Black holes release Hawking radiation, would should be easy to direct in a certain ...

4 answers  ·  posted 9y ago by PyRulez‭  ·  last activity 7y ago by PyRulez‭

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Q&A Safe distance from a black hole?

Okay so we all know that one planet from the movie "Interstellar" that orbited the black hole Gargantua. How do I NOT get that? What's the minimum safe distance for a planet to be from a black hole...

4 answers  ·  posted 8y ago by Z.Schroeder‭  ·  last activity 7y ago by Z.Schroeder‭

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Q&A What forces would make leaving a planet impossible?

My idea is to have a place that is "inescapable" by any conventional propulsion system, except it has Earth-like conditions: a breathable atmosphere, 1.0g gravity, etc. What would have to be the c...

5 answers  ·  posted 8y ago by GideonKain‭  ·  last activity 8y ago by GideonKain‭

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Q&A Could a man-made black hole deorbit the moon?

In the story I'm writing, humanity has cracked FTL travel by compressing a chunk of matter outside the craft into a short lived, gravitationally weak black hole that leads to a higher dimension (kn...

2 answers  ·  posted 8y ago by Mattias‭  ·  last activity 8y ago by Mattias‭

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Rigorous Science How close would merging black holes have to be to feel gravitational waves?

Recently LIGO discovered gravitational waves caused by two black holes that were orbiting each other, and then collapsed into one black hole. A few months later, we find out that this actually happ...

1 answer  ·  posted 8y ago by Cameron Payton‭  ·  last activity 8y ago by Cameron Payton‭

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Q&A If Earth was sucked in black hole,would it just stay there or it would be crushed by gravity pressure?

If Earth would have been sucked into black hole. Would it be crushed by gravity pressure or not?

2 answers  ·  posted 8y ago by Confused Tom‭  ·  last activity 8y ago by Confused Tom‭

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Q&A How massive would a black hole have to be to swallow a person

As I understand it, very small black holes have very small and close event horizons, and wouldn't necessarily pose a gravitational risk (I know they give off huge amounts of energy, but let's leave...

2 answers  ·  posted 8y ago by B. Evett‭  ·  last activity 8y ago by B. Evett‭

Question physics black-holes
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Q&A How big would a "Ring World" have to be to orbit a black hole?

In many Science Fiction books and games, there are worlds or planet-like objects that are rings that orbit (or float around in space) (some examples being the Halo (from Halo) or the Ringworld (fro...

4 answers  ·  posted 9y ago by Shadow Z.‭  ·  last activity 8y ago by Shadow Z.‭

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Q&A What would getting hit by a micro black hole laser look like?

So your star and/or planet gets hit by the CrushSun. The huge laser looks terrifying, but then you realize that the main weapon is the microblack hole it hit you with. What does it look like when ...

3 answers  ·  posted 8y ago by PyRulez‭  ·  last activity 8y ago by PyRulez‭

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Rigorous Science How big a black hole is needed for this story?

The story begins in classic disaster film style. A small rogue black hole is approaching our Solar System. It isn't going to get close enough to destroy everything, but it will agitate our Sun, ca...

3 answers  ·  posted 9y ago by Henry Taylor‭  ·  last activity 8y ago by Henry Taylor‭

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Q&A On the immediate effects of a small, short term black hole

What immediate effects would a small, short-term black hole have if it appeared in a residential backyard? How small or short-lived would it have to be to be survivable, if it is survivable at all?...

6 answers  ·  posted 9y ago by MiraAstar‭  ·  last activity 8y ago by MiraAstar‭

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Q&A How to convert a traversable wormhole into a black hole?

So the premise goes: A previously-traversable wormhole evolves into a black hole because (x) happens. What's (x)? What would it take for this to occur? Either naturally (a cosmic occurrence), by ...

3 answers  ·  posted 8y ago by equustel‭  ·  last activity 8y ago by equustel‭

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Q&A Could a wormhole exist on a planet?

For my story to work, my characters have to stumble across a small wormhole that actually exists on Earth and is responsible for multiple disappearances throughout history. It connects a point on E...

3 answers  ·  posted 8y ago by Alyk‭  ·  last activity 8y ago by Alyk‭

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Rigorous Science How can an advanced civilization harvest energy from an x-ray binary?

An x-ray binary is a binary star system consisting of a star and a stellar remnant. As matter is ripped from the star and is then accelerated into the neutron star/black hole by its gravity, x-ray...

1 answer  ·  posted 8y ago by user6760‭  ·  last activity 8y ago by user6760‭

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Rigorous Science What is the best planetary orbit around a black hole in order to support life?

Note: I am aware of a previous question Physiological effects of living on a world close to a black hole As I understand it, that question refers specifically to a planet that is in a non-ideal ...

2 answers  ·  posted 8y ago by chasly from UK‭  ·  last activity 8y ago by chasly from UK‭

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Q&A How long until a small black hole makes the sun fail?

Imagine aliens dropped a small black hole (say, 1% of the moon's mass, so you wouldn't notice the difference in gravitation) into the sun (from the far side of the sun, so nobody on earth can see i...

3 answers  ·  posted 9y ago by celtschk‭  ·  last activity 9y ago by celtschk‭

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Q&A What would the sky look like to a being inside the event horizon of a black hole?

Suppose it was possible to travel to inside the event horizon of a black hole safely. Also suppose said black hole is large enough that the curvature of the horizon of the surface of the central ma...

5 answers  ·  posted 9y ago by Canina‭  ·  last activity 9y ago by Canina‭

Question space black-holes
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Q&A Physiological effects of living on a world close to a black hole

Let's say you were living on a planet near (but not too near) a black hole. I'm thinking of the planet Miller in the movie Interstellar. Obviously there are some strong tidal forces. But at this d...

1 answer  ·  posted 9y ago by Coomie‭  ·  last activity 9y ago by Coomie‭