Questions tagged [black-holes]
For questions about a region of space time where gravity is so strong that nothing, not even light, can escape it.
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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 increase ...
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Effects of closing a Black Hole in a solar system (let's say ours?) [closed]
Lets say for instance an alien civilization decided to drop an artificial star on the edge of our solar system's Heliosphere, resize it 20x the size of ours, implode it into a black hole but omit the ...
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Is it safe to orbit HDE 226868?
I'm considering a story where an exploration is devised to explore a binary system containing a black hole; the choice is Cygnus X-1, with its companion supergiant star HDE 226868. It would likely be ...
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What if a molecule turned into a black hole? [closed]
Could it turn into the size of a quark? Could there be a quark-sized black hole?
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Life on planets near quasars
To be very-very simple:
The very main setting of my world is a very special and very small galaxy, the galactic core of which is a quasar - with the "iconic" light beam in the middle, serving a ...
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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 ...
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Seeing Using Gravitational Waves [duplicate]
I know that humans' eyes are adapted to detect some electromagnetic waves, and their ears are able to detect sound waves. What I would like to ask is: Is it plausible for a species to biologically ...
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Assuming there was a spaceship that could counter-act the effects of being near a black hole, could a human observe the hole dissipating?
The most common explanation of what would happen to a space-ship that falls towards a black hole ends with spaghettification.
However imagine there was a space-ship built out of unobtanium, that could ...
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Is it worth sending a manned mission to a black hole?
Suppose we detect a stellar black hole passing near the Solar system, and we have technology and time to send a manned mission to study it.
Are there any experiments or observations that would help ...
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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 ...
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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 limiting ...
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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 of ...
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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 ...
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Building a Dyson Shell around a black hole?
What's the minimum safe distance to start building if you don't want any part of the shell or swarm to fall into the event horizon? Could you build a stable structure just short of the Schwarzschild ...
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What is safest distance for a dormant black hole? [closed]
Would it be safe for humanity if instead of Proxima Centauri being a red dwarf, it was a stellar mass black hole?
Edit:
Narrowed the question
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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 light. ...
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Destroy a Planet inside a black hole?
Imagine a race whom have mastered the knowledge of black holes, at least a bit.
They've found a way survive, with their planet intact, inside the gravitation of the black hole without getting ...
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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 ...
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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 ...
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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 (known ...
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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 happens ...
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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 ("...
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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?
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How to adjust our Goldilocks Zone if Nemesis turns out to be real?
I'm drafting a story where a solar system is a binary star system, except that one of its stars turns out to be a black hole with 1.5 solar mass. However, I have realized that adding a black hole ...
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How could you rapidly increase a black hole's mass?
Say you were using a black hole as a propulsion drive á la Crane and Westmoreland http://arxiv.org/pdf/0908.1803.pdf- so your black hole has a radius of around .9 attometers - super tiny - around 600,...
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How big would a wormhole have to be to allow a radio signal to pass through? [closed]
Assuming advanced alien technology to create and control wormholes, how big would a wormhole be that would allow a radio signal to pass through? Is there a way to know the size of the mouth as ...
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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 ...
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1 Light Year Diameter Planet
Suppose a species has limitless resources and the ability to construct megastructures of an astronomical scale.
Would it be possible, given antigravitational technology (hypothetical), to create a ...
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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 ...
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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 a ...
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How much energy does this sun crushing ship, the CrushSun, use?
Useless Backstory
"Why are you waking me up Sergeant? And why did we enter near-light speed?"
"We received a distress call, and there wasn't enough time to notify you, sir."
"What kind of distress ...
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What would happen if the black hole at the center of a galaxy was removed?
Say you have a galaxy, possibly ours, with a central black hole. In an instant the black hole falls through a plot hole and vanishes.
What happens to the rest of the galaxy?
Does everything keep on ...
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How would something faster than light be affected by a black hole?
What would happen if something (having mass) existed which has a greater speed than that of light?
How would it be affected by the black hole when it, say, speeds past a black hole? Would it ...
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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 the ...
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How would intelligent life evolve on an Earth-like planet with dangerous high tide?
Inspired by the 2014 film Interstellar directed by Christopher Nolan, the crews landed on a planet with water flooded up to knee level. Suddenly a wall of water like mega tsunami appears from a ...
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Protocol between an information sharing black and white hole pair
Premise:
Imagine a "sender" construct that has the ability to create it's own micro black hole and send information as light into it.
On the receiving end, a "receiver" construct would contain it's ...
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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 ...
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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 ...
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Protect a planet against a black hole attack
Suppose in a very very long future, humans have become relative powerful military force in galactic politics due to a very powerful weapon: the ability of creating black holes wherever we want. Now we ...
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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-rays ...
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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 ...
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Would the gravitational waves from a binary black hole system make a feasible weapon?
Backstory: Okay, so we have decided to wage war on numahs for the macguffenite. We mostly are doing things like shooting lasers at each other ships, and occasionally shooting high velocity projectiles ...
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How will humanity survive when black holes gain sentience and turn on us? [closed]
Okay, so humanity has been orbiting black holes so that we can time dilate, and explore the galaxy. The black holes enjoy being in the presence of the most complex things in the universe, and we have ...
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How to accelerate living things really fast without killing them?
Okay, so our society has starting harnessing significant amounts of energy from its sun, and has started mass producing micro-black holes (although there have been experiments with gathering energy ...
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How can Earth prepare for hyper velocity black hole?
Suppose in ten decades time, a hyper velocity black hole estimated to be as massive a 3 Suns are approaching us at 1.5 millions mph (670000 m/s). Our Earth bounds telescope and orbiting satellites ...
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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 ...
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Short Term Effects of Orbital Decay
The Earth has suddenly been decelerated, "bumped" into an unstable orbit. Guess you missed the jolt.
The velocity has been reduced such that the planet's orbit will hopefully restabilize between ...
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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, ...
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How to Create and Use a Black Hole Computer Drive?
I have been working on a futuristic story where information can be stored and used with a black hole. This is a highly advanced human society that has accomplished interstellar space travel via both ...
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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 ...
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