Earlier quoted context omitted.
If a few water molecules are destroyed and replaced created over a long time then is it still the same glass of water?
The famous glass of Theseus’ water eh? https://en.m.wikipedia.org/wiki/Ship_of_Theseus
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NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
171–180 of 278 posts
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#172> a fascinating world with a salty, subsurface ocean of liquid water—possibly twice as much as in all of Earth’s oceans combined. If we brought water back a container of water from Europa would this be the largest amount of new water entering the earth since planets struck it billions of years ago? I briefly googled it (I dont know much about this stuff tbh): > The water on our Earth today is the same water that’s be…
Great video I just happened to finish:
https://www.youtube.com/watch?v=vjDnh7zfO98
"Where did Earth's water come from?"
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#173Why does one random Jovian moon have so much water? And why not all similarly sized rocky bodies in the solar system? Isn't this even stranger than Earth's water?
Here is a great series about the water in the outer solar system & the rest of the Universe.
You might have forgot something.
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#174> a fascinating world with a salty, subsurface ocean of liquid water—possibly twice as much as in all of Earth’s oceans combined. If we brought water back a container of water from Europa would this be the largest amount of new water entering the earth since planets struck it billions of years ago? I briefly googled it (I dont know much about this stuff tbh): > The water on our Earth today is the same water that’s be…
Every once in a while, I get reminded that people don’t necessarily have a scientific background. 1. Water molecules are not indivisible, of course. Many biological processes will rip apart hydrogen and oxygen, or combine them back together, and have been doing so for billions of years. Industrial processes do the same. So there’s plenty of “new water” from oxygen in the air, etc. 2. New water/oxygen/hydrogen land on…
Is the water I drink the same water I pee? Or does it get taken apart and put back together with different pieces?
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#175> a fascinating world with a salty, subsurface ocean of liquid water—possibly twice as much as in all of Earth’s oceans combined. If we brought water back a container of water from Europa would this be the largest amount of new water entering the earth since planets struck it billions of years ago? I briefly googled it (I dont know much about this stuff tbh): > The water on our Earth today is the same water that’s be…
It depends on your definition of creating new water.
When we extract crude oil from ground, hydrogen is made as byproduct. Similar with other industrial processes. That hydrogen released in atmosphere burns with oxygen to make water.
So one could say that is new water.
The sun is a big hydrogen ball, and some of the big sun flares may bring new hydrogen atoms to Earth. Which then end up oxidized into water, hence new water.
https://www.nasa.gov/mission_pages/stereo/news/Solar_Flare_S....
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#176Earlier quoted context omitted.
Every once in a while, I get reminded that people don’t necessarily have a scientific background. 1. Water molecules are not indivisible, of course. Many biological processes will rip apart hydrogen and oxygen, or combine them back together, and have been doing so for billions of years. Industrial processes do the same. So there’s plenty of “new water” from oxygen in the air, etc. 2. New water/oxygen/hydrogen land on…
Is the water I drink the same water I pee? Or does it get taken apart and put back together with different pieces?
Same H2O molecules, different levels of other molecules mixed in with it.
It is possible to recycle urine into drinkable water. That’s what they do in international space station where water is very precious.
https://www.nasa.gov/mission_pages/station/research/news/wat...
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#177Earlier quoted context omitted.
Every once in a while, I get reminded that people don’t necessarily have a scientific background. 1. Water molecules are not indivisible, of course. Many biological processes will rip apart hydrogen and oxygen, or combine them back together, and have been doing so for billions of years. Industrial processes do the same. So there’s plenty of “new water” from oxygen in the air, etc. 2. New water/oxygen/hydrogen land on…
Is the water I drink the same water I pee? Or does it get taken apart and put back together with different pieces?
Metabolism converts sugars and oxygen to carbon dioxide and water. Fire has the same inputs and outputs too! You can think of metabolism as releasing the same energy as fire but with more steps so our bodies can harness and use the energy via various other chemical reactions.
Most of the water from metabolism is released in your breath. Water you pee is mostly water you ingested via drinking and eating.
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#178Earlier quoted context omitted.
Don't forget about Enceladus. Also a massive ocean with the added benefit of shooting enormous geysers into space. Would be wonderful if our solar system had at least 3 worlds with ocean life. https://solarsystem.nasa.gov/moons/saturn-moons/enceladus
or terrible news a la great filter arguments
Except those are utter nonsense. The distances involved, the speed of light and inverse square laws mean we wouldn't expect to have detected aliens yet if they are there, so we can't deduce anything about their existence from the fact we haven't detected them. The "Fermi" "paradox" is like someone locked in a bathroom going "OMG I can't see anybody! Everybody on earth must have died!!".
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#179Why does one random Jovian moon have so much water? And why not all similarly sized rocky bodies in the solar system? Isn't this even stranger than Earth's water?
A recent episode of Planetary Radio discussed this. Io could have been a water world as well, once.
https://www.planetary.org/planetary-radio/2023-lost-oceans-a...
Rocks can consume a lot of water as well. Their chemistry means they can absorb a lot of water in their mineral structure so water isn’t just about surface oceans but also how much is inside a celestial body as well.
Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa
#180Earlier quoted context omitted.
or terrible news a la great filter arguments
Except those are utter nonsense. The distances involved, the speed of light and inverse square laws mean we wouldn't expect to have detected aliens yet if they are there, so we can't deduce anything about their existence from the fact we haven't detected them. The "Fermi" "paradox" is like someone locked in a bathroom going "OMG I can't see anybody! Everybody on earth must have died!!".
> The distances involved, the speed of light and inverse square laws mean we wouldn't expect to have detected aliens yet if they are there
That’s not true at all - simple assumptions would make it likely we would have encountered intelligent life if it evolved in the past in this galaxy.