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NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

webbtelescope.org

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Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#191

Post by uoaei »

bmitc wrote: post #183
jychang wrote: post #108

Earlier 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…

> Every once in a while, I get reminded that people don’t necessarily have a scientific background. This isn't necessary for your point and detracts from an otherwise useful clarification.

> detracts from it

I think you're assigning a moral quality to certain kinds of knowledge that isn't warranted.

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#192

Post by globular-toast »

BurningFrog wrote: post #129
dmix wrote: post #87

> 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…

This is why I roll my eyes at alarmist talk of various processes "consuming X zillion gallons of water". Water is much stronger than that. It just passes through our processes and will outlast us all.

Yeah man, water your vegetables with sea water, they'll love it.

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#193

Post by bmitc »

uoaei wrote: post #191
bmitc wrote: post #183

Earlier quoted context omitted.

> Every once in a while, I get reminded that people don’t necessarily have a scientific background. This isn't necessary for your point and detracts from an otherwise useful clarification.

> detracts from it I think you're assigning a moral quality to certain kinds of knowledge that isn't warranted.

I don't know what that means. The statement just wasn't useful and comes across as sassy and arrogant.

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#194

Post by swagempire »

Phrenzy wrote: post #163
ijidak wrote: post #98

Why 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.

Hi, a link? :)

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#195

Post by gremlinsinc »

wishfish wrote: post #94
monlockandkey wrote: post #21

Europa is definitely the most exciting part of the solar system that sparks imagination. Literally 100s of miles of pitch black ocean with thermal vents, ripe for life. Getting kiddy thinking about the leviathan sized aliens roaming the deep ocean of Europa. Does anyone else feel this way?

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

imagine if we could harness the power of the sun and basically direct extra heat towards target moons and planets via a mirror system or something and basically make any body in our solar system human habitable warm.

I'd imagine this could also be weaponized against dangerous asteroids, as the heat laser or whatever could cause a change in direction.

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#196

Post by RamblingCTO »

johnchristopher wrote: post #50
monlockandkey wrote: post #21

Europa is definitely the most exciting part of the solar system that sparks imagination. Literally 100s of miles of pitch black ocean with thermal vents, ripe for life. Getting kiddy thinking about the leviathan sized aliens roaming the deep ocean of Europa. Does anyone else feel this way?

Europa Report (movie): https://www.youtube.com/watch?v=avzqYgtpdMQ I enjoyed it ^^

I was thinking that just now and will rewatch this evening! Any other recommendations of the same vibe?

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#198

Post by funnybeam »

jonplackett wrote: post #85
LeifCarrotson wrote: post #39

Earlier quoted context omitted.

No, they're quite open about the capabilities of the optics (see https://webb.nasa.gov/content/forScientists/faqScientists.ht... ). It's just that Europa is very far away. Webb's mirror system has an angular resolution of about 0.1 arcseconds. Earth is currently about 630 million km from Europa (Webb is only 1.5 million km away from earth). Because the sine of theta is approximately equal to theta for values of theta…

I wish every website I visited had comments of this quality…

This is why I only read Hacker News these days.

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#199

Post by mjan22640 »

c54 wrote: post #177
jvm___ wrote: post #174

Earlier quoted context omitted.

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.

How do the kidneys identify the H2O molecules origin?

Re: NASA’s Webb finds carbon source on surface of Jupiter’s moon Europa

#200

Post by hutzlibu »

bmitc wrote: post #189
jimkleiber wrote: post #186

Earlier quoted context omitted.

I find it helpful to remember. When covid was starting to spread I worried a lot about potential exponential growth and was confused why a lot of others didn't seem so worried. While there may be many reasons, one that came to mind is that they may not have learned as much about exponential growth as I had in electrical and computer engineering and in working with startups. So it helped me to remember not everyone ha…

There will always be people that don't know what you know and vice versa. It's a given fact of life. It's like forgetting that the sky is blue. Haha. I.e., I agree with you, but your statement is more humble than the last.

"but your statement is more humble than the last."

It also was a different person ..

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