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

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

#101

Post by tredre3 »

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…

> The water on our Earth today is the same water that’s been here for nearly 5 billion years.

We create tons of water as a byproduct of many industrial processes, that's "new" water. Of course in the grand scheme of things the quantities are inconsequential, so the statement is probably still generally true...

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

#102

Post by spartanatreyu »

harph wrote: post #99
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?

There's also https://en.wikipedia.org/wiki/Enceladus so it's not just one random moon.

Sticking with just the Jovian moons, both Ganymede and Callisto are thought to have subsurface oceans too.

Ganymede's oceans might be the largest in the entire Solar System.

1. https://en.wikipedia.org/wiki/Ganymede_(moon)#Subsurface_oce...

2. https://en.wikipedia.org/wiki/Callisto_(moon)#Internal_struc...

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

#103

Post by frogulis »

tredre3 wrote: post #101
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…

> The water on our Earth today is the same water that’s been here for nearly 5 billion years. We create tons of water as a byproduct of many industrial processes, that's "new" water. Of course in the grand scheme of things the quantities are inconsequential, so the statement is probably still generally true...

Is it truer to say "the hydrogen and oxygen on our Earth today are the same [...] 5 billion years"?

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

#104

Post by bilsbie »

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…

Hydrolox rockets have been making millions of gallons of new water on earth.

Even burning gasoline creates some new water.

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

#105

Post by ricksunny »

xwdv wrote: post #82
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?

Wondering if we could eat fish born on Europa and if there would be any ill effects.

No doubt on some Europan version of HN right now they're posting wondering the same thing about us.

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

#106

Post by tantalor »

tracedddd wrote: post #90
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…

Don’t commercial hydrogen fuel cells create water as a byproduct?

Yeah, but you make hydrogen fuel out of water, so you're kinda just playing accounting games with the water.

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

#107

Post by nequo »

mikeInAlaska wrote: post #66
sph wrote: post #25

Earlier quoted context omitted.

Honestly, the only thing I wish to see before I die is a submarine mission to Europa or Ganymede. It would be even more mind blowing and an amazing achievement for humanity, and the search for extraterrestrial life. That, and the dragonfly-helicopter-thing on Titan. Have you ever seen the Sun set on a methane lake? It's time for a rewatch of Europa Report (2013).

A Europa submarine mission is a good bucket list, but don't sell us too short. * Humans on Mars * Room temperature Superconductors and their effects on humanity. * Sustained Fusion Power for the masses. * General Artificial Intelligence * Human brain-computer interface. * Full reversal of climate change. * Extended human lifespan. * Curing all forms of cancer. * Universal translator for all human languages. * Discove…

> Curing all forms of cancer.

Likewise, solving antibiotic resistance.

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

#108

Post by jychang »

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…

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 earth fairly regularly due to comets, which are usually slushy balls of ice.

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

#109

Post by [deleted] »

jychang wrote: post #108
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…

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…

[deleted]

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

#110

Post by [deleted] »

frogulis wrote: post #103
tredre3 wrote: post #101

Earlier quoted context omitted.

> The water on our Earth today is the same water that’s been here for nearly 5 billion years. We create tons of water as a byproduct of many industrial processes, that's "new" water. Of course in the grand scheme of things the quantities are inconsequential, so the statement is probably still generally true...

Is it truer to say "the hydrogen and oxygen on our Earth today are the same [...] 5 billion years"?

[deleted]
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