Recent comments in /f/todayilearned

VoxEcho t1_jdoj1cn wrote

Reply to comment by proudlyhumble in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl

The reason explosive decompression can be a thing in a plane but not in space is because of the force of outside air acting on things inside of the vehicle. If something acts on an air plane to abruptly depressurize it through a sufficiently large enough hole, it isn't so much that things are "sucked" out of it as it is that things are "blown" out of it. It is the same force that makes it feel like something can get sucked out of a car window when your vehicle is in motion even though there isn't actually a meaningful pressure difference between your closed car and the outside air, it has to do more with the motion of the air along the vehicle.

In a vacuum things like gasses (air) would expand outwards through a breach, but there isn't the same force acting on a space shuttle that there is on a vehicle in motion on Earth, the popular media idea of things getting explosively decompressed out of a spaceship wouldn't actually happen outside of the force of whatever caused the breach to occur in the first place.

The force exerted by air expanding into a lower pressure area, like what would happen if you "opened the car door" so to speak, but in outer space, isn't enough to actually "suck" things out of the vehicle. Except probably really light things like paper or something, depending on how abrupt the breach was and how big (or, small) it is. You'd basically have to get sucked through a garden hose to generate enough pressure to drag a human body out of a spaceship -- and in that specific theoretical you'd block the opening with your clothing or just the weight of your body far before any actual bodily damage would occur. It probably wouldn't be fun to experience but you'd survive and with all your limbs.

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seapulse t1_jdoic5h wrote

Reply to comment by fireandiceofsong in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl

the percy jackson books are all about prophecies. i think the main overarching plot might fit into what youre looking for, but not exactly. plus each book (i think? havent reread in a while) gets its own funsies prophecy :)

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Riff316 t1_jdoia44 wrote

Reply to comment by VoxEcho in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl

The Hadfield vent might work though, since it creates a directional pressure differential. It actually did work to remove the ball of contaminated water from Chris’s eyes.

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VoxEcho t1_jdoi153 wrote

Reply to comment by Riff316 in TIL: Thanks to poor internal communication at NASA, information about a spacesuit water leak wasn't properly communicated. Later, Astronaut Luca Parmitano almost drowned on a July, 2013 ISS space walk, his helmet filling with several liters of water before they could get him back inside. by OvidPerl

Yeah all the comments acting like instant death would occur if any part of your body is exposed to vacuum are exaggerating a lot. It would certainly be unpleasant, possibly damaging to tissue, but the mortal danger of exposure to vacuum is way overexaggerated by popular media.

The actual danger of removing his helmet in the situation above is that it wouldn't solve the problem, because the water would just linger there with no outside force directly clearing it off from him. It'd be pushed in all directions due to venting gas from his suit presumably, but the water would be expanding at that point anyways. If he just slaps his helmet back on it would, presumably, still contain a large amount of water and continue filling with water.

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National_Ad9265 t1_jdo8z59 wrote

Reply to comment by 2MegaWhats in TIL that Barq's Root Beer was first created by Edward Barq in Biloxi, Miss, in 1897. In 1934, Barq and a former employee, who moved to New Orleans, agreed to each distribute their own version of the root beer, with the New Orleans version having a red label and the Biloxi version having a blue one. by jdward01

I knew it, I was never around it enough though to actually process the fact that is was barqs. lmao

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shewy92 t1_jdo7osu wrote

Reply to TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh

> some fetuses actually develop outside the uterus attached to the intestines in the body cavity.

And in some states that mother wouldn't be able to get an abortion and would probably die.

In 2019 Ohio tried making it a law where ectopic pregnancy fetuses had to be reimplanted, a thing that medically isn't possible

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DudeDudenson t1_jdo4wzk wrote

Reply to comment by afox892 in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh

I've been learning horrifying shit in the internet since dial up so I'm okay reading all of this but maybe you should add a disclaimer at the beginning, this kind of stuff will literally traumatize people

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