This is discussion archived from a time before the current discussion method was installed.
BritBllt: Removing this entry...
- In Andromeda this trope is used, albeit in a strange way. The titular spaceship is trying to escape from a black hole. It gets stuck, not being able to go out or being sucked in. In the ship, the captain and his firstmate, the lone survivors of the ship after a battle, are fighting. The next scene is depicted as being fifty years after the the last one, and they are still in the same position they were before. Don't try explain it, it's just cool.
LegoRemix: Regarding the Stargate SG-1 Entry
- The example given in the Stargate SG-1 Entry is actually perfectly plausible. The accretion disk is just a visible zone if matter swirling towards the Black Hole, and it is POSSIBLE to escape from it, so I'm not seeing why this is unreasonable...
BritBllt: It's still an unrealistic black hole, but I've always wondered...
- Disney's The Black Hole. Would be Exactly What It Says On The Tin, except the BH in question isn't black, but more a swirly purplish hurricane. At the end the heroes fall through the hole and emerge, evidently, in another universe.
- Meanwhile, the bad guys end up in hell. Good ol' Nightmare Fuel for the kiddies.
Since the good guys ended up in a New Age-y sort of Heaven, and the bad guys ended up in a burning Hell, could the black hole have actually killed them, and what they arrived in was their respective afterlives?
I think the opening quote is too accurate for this page.
Dalek:I believe we should delete the Doctor Who entry.
- The Doctor Who episode "The Impossible Planet". A planet orbiting a black hole? Why, that's impossible! It would get sucked in! What's especially painful is that the titular planet would appear to be embedded within the hole's accretion disc; it could be fixed with a change in wind direction and a couple of rewritten lines of dialogue, so that the planet manages to continue hovering over the hole, without orbiting as part of (and eventually getting ground up by) the accretion disc, and without being sandblasted out of existence by the wind. And this is a series that was originally conceived as being educational.
This Trope can't really apply when the whole episode is about how impossible it is and that the characters do view realistic effects of a black hole. After the Impossible Planet becomes no longer immune to the black hole the planet and the escaping shuttle experience fairly realistic effects.
Moving this discussion into the discussion area.
- And of course, this is ignoring the positively painful example of You Fail Physics Forever. How does a single drop of substance (whatever properties it might have) create something that is, by definition, made of a massive amount of matter? Simple answer is, it can't. Not without breaking the law of conservation of mass, anyway. And if humans ever find a way to create matter from nothing, the creation of black holes would probably be the last application that technology would see.
- That's no big deal; all you have to do is assume that red matter is massive enough that red matter itself would form a black hole if released, but contained by a device that shifts its effective mass down to nothing. Star Trek has artificial gravity, so presumably this is no big deal.
- Nope. Mass has relatively little to do with it. Black holes don't depend on mass; they depend on density. If you wanted to convert Earth into a black hole, you could add mass to it until it collapsed into one, but you'd have to add at least 3 solar masses to do the job. All you really have to do is squeeze it until its mass becomes concentrated enough to form an event horizon that light cannot escape from (which, if it wasn't rotating, would be about 9mm across). Its mass would still be the same as Earth's, so the Moon and artificial satellites could continue to orbit it as if nothing had happened, but anything that crossed that 9mm threshold would be unable to escape. Red matter could just be matter that collapses into itself until it forms an event horizon. The main problem for the plot of the movie isn't a lack of mass, it's how to keep the black hole around long enough to do any damage before it evaporates due to Hawking radiation.
- And of course, this is ignoring the positively painful example of You Fail Physics Forever. How does a single drop of substance (whatever properties it might have) create something that is, by definition, made of a massive amount of matter? Simple answer is, it can't. Not without breaking the law of conservation of mass, anyway. And if humans ever find a way to create matter from nothing, the creation of black holes would probably be the last application that technology would see.
