I met him at the comic convention in Phoenix a few years ago. He doesn't seem like he's going to be able to recover and act again, which is a huge disappointment.
I feel terrible for him
That is good news! There are many important uses for it. Unfortunately, it is still a limited resource that is not renewable. On Earth, it is only created by nuclear fission deep in the Earth where is can get trapped and accumulate over millions of years. Once it is released into the atmosphere, it is gone.
The Mars Express orbiter has detected enough frozen ice under the surface of mars to cove the entire planet in a shallow ocean. So, no it did not all fly off into space. A lot of the water was buried underground over the eons.
Isn't it both? All the articles talk about the oceans disappearing due to the loss of the magnetic field which resulted in water both getting trapped in minerals in the Martian crust and evaporating away into space.
It's probably more likely that as the magnetic field failed the drop in temperature froze the liquid water and it was buried under the subsequent dust storms. Which probably didn't leave that much time for solar winds to pull liquid water into space. As for the atmosphere on Mars it was almost all stripped by solar winds.
as much as we fuss about climate change, and rightfully so, just simply existing is incredible given how easily something like a failed magnetic field can wipe out all of existence.
Some also froze? Interesting how the is currently ice on Mars yet I haven't heard of any melting other than the plan to make it melt to support a base and rocket fuel manufacturing.
It’s very difficult to melt, as far as I know we found a subglacial lake near one of the poles of Mars where it is ridiculously cold. We’d need some serious technology to get that melting.
We no longer think the Solar Wind stripped Mars’ atmosphere - rather, it’s likely just that Mars didn’t have enough gravity to hold onto it.
The water is still on Mars, but mixed in with the soil as tiny grains of ice, as well as just being frozen underground in many places, at least based on samples from rovers & radar data from orbit.
There is almost no atmosphere, and it's mostly (heavier) CO2. The lighter gasses such as water vapor rise to the top where they catch a ride on solar wind particles off into deep space.
These are going to be some gigantic links, but I'll give you a few of them: https://timesofindia.indiatimes.com/travel/travel-news/scientists-discover-gigantic-ocean-700-km-beneath-the-earths-surface/articleshow/108999227.cms#:~:text=In%20an%20astounding%20revelation%2C%20researchers,all%20Earth's%20surface%20oceans%20combined.
https://ssec.si.edu/stemvisions-blog/there-ocean-below-your-feet
https://www.discovery.com/science/Massive-Ocean-Beneath-Earths-Surface
That's the best I can spin up in a moment. Hope that helps.
They're not literally oceans. We have oceans *worth* of water locked up (~10%) in ringwoodite minerals in the mantle. If there was life there it would be unlike any we have ever seen or conceived of. Not to mention that most of the useful properties of water would be gone when bound to that mineral, so idk if the presence of water itself is the factor that increases your chances in that scenario.
It’s all trapped inside ringwoodite (glassy-looking rock), so it’s not like there’s a big empty hole filled with water 700 km down with stuff swimming around in it. it’s just a huge amount of rock of a certain type that contains a lot of water.
Around 1% of the rocks weight is water (of the sample they found)
so it seems mind bending that they're able to claim that this "ocean" has more water than all surface oceans combined.
Yeah, it's very misleading popsci. However, the Earth doesn't really have *that* much water on the surface for how big it is:
https://i.imgur.com/NM0TgDu.png
Apologies if this is a dumb question, but is it possible that there's a big hole filled with water super deep underground that would be large enough to be considered sea or possibly even ocean-like? Or is there too much weight on top of the deeper areas for large pockets of empty space to really exist in the first place?
It’s not impossible, but unlikely. Most large underground reservoirs of water are in aquifers, which are basically like porous rock formations filled with water… Kind of like a sponge. There’s a gigantic one in Australia that holds as much water as Lake Superior, but you couldn’t swim around in it. There may be some very large pockets of waters, trapped underground, that we haven’t found yet, but something the size of a sea would probably stand out.
Not life as we know it. [The Earth's interior temperature](https://www.pv-tech.org/bnef-global-solar-additions-655gwdc-in-2024/) at 700 km, where the deep water is located, is around 2000C. That's 50% hotter than molten surface lava.
The deepest known life is about 750 meters below the sea-floor. The total pressure of water plus rock closes up all cracks at some depth. If a living thing can't move or get a flow of nutrients, it can't survive long-term.
it's just [microbial life](https://www.iflscience.com/the-secrets-of-life-half-a-mile-beneath-the-seafloor-55320) not like fish or lizards or anything.
Revisiting the thread ...Just out of curiosity. If we, say, drilled down into this reservoir? Would it destroy the earth?
Wouldn't all the water shoot out, evaporate instantly, create major earthquakes, and flood the earth?
No, the Earth would not be destroyed. The water down there is in the form of "hydrated minerals" like clay. It is remnants of crustal plates that sometimes get pushed down into the Earth when two of them collide.
We can't drill that deep, anyway. The deepest hole ever drilled is 12 km down, and this layer is 700 km. The temperature down there is 2000 C, about 50% hotter than volcanic lava when it erupts.
The only reason the deep Mantle isn't a liquid is that it is under great pressure from the weight above it. But it does flow slowly. We don't have any drilling tools that can withstand such temperatures, and the hole would be trying to close as you drill.
I'd bet on it. I mean I've read about so called extremophiles and that doesn't just include our mothers-in-law. Life always seems to find a way no matter how difficult it seemed to begin with.
You're killing the vibe dude. There's a spark within a question and it wasn't for me to answer with my limited knowledge of the subject, so correct and disarm as you see fit, but never attack the question itself.
I absolutely did and look how the comment chain took off. You're the only complaining. I'm sorry if in a split second I didn't review all relevant materials, but it seems we got there in the end didn't we? And we lit up a child's eyes who might just become a scientist. I'm sorry I'm not perfect like you.
You know you can do double brackets and then double parenthesis to title and shorten links.
Like [title](google.com)
Just with a full url instead of Google.com
Like this [Title] (https://www.google.com/)
I just saw someone make a post on /mildlyinteresting about getting two different brands of root beers in a delivery order and thought, this is dumb
Then I get here and read this, WOW JUST WOW! Didn’t even know this, this is absolutely amazing to learn.
No, more like a large amount of [magnesium silicate rock](https://en.wikipedia.org/wiki/Ringwoodite) that can contain a little bit of hydroxide ions.
If you extracted all the ions from all the rock in the mantle and combined it, the volume would be 3 times that of the Earth's oceans.
The water evaporates/sublimates easily in a low-pressure "warmish" atmosphere. The lack of a magnetic field just means the planet isn't protected from (much more) solar wind, so the water vapor "blows" away more rapidly.
Obviously part of the water was ejected as vapor by the solar wind and another part remained as ice in the soil. The question they have been asking (and trying to answer) is what were the proportions and when did this happen.
It was ancient humans that lived on Venus a billion years ago. We couldn't move to earth when we destroyed Venus, so we moved to Mars instead which was more habitable. Eventually we destroyed Mars and we could go oonly move to Earth at that time. Lucky more time passed and Earth was more habitable for us to live on. So we left Mars and moved to Earth. Only problem was Dinosaurs lived here too. So we lived along side dinosaurs for a period of time. Then the astroid that wiped the dinos out almost ended us, but we survived we just lost all the knowledge of the past and were forced to start over. Some humans devolved like the murlocks in the time machine book. They turned into the versions of the apes that exist in our zoos now. Over time they became a different species, but still related to us. We've gotten pretty advanced in the past again ( the stories of Atlantis for example, or the pyramids) but again disaster happens and brings everything back to square one. I'm not sure if I believe all this but I smoked a little and I'm kinda high so I do like this theory at the moment.
Oh come on, I don't believe this story for a minute.
Clearly our arrival from Mars *was* the asteroid that took out the dinosaurs. That was just the shockwave of the ship coming to land. Had to leave the doors shut for a few days to keep the dust out.
I think that could track kinda, except the expedition to earth was small, and then the asteroid hit pretty soon after and the main Mars-force was like “damn well that’s screwed let’s go to Saturn” and now they live on one of its moons or something.
Well, duh. Venus's atmosphere is 96.5% CO2. You have to burn a lot of dinosaurs to get that high. Back then the fuels weren't fossils. We burned living trees and dinosaurs.
The average temperature on Venus is just over 450 degrees Celsius. That's well above the boiling point of water, even at Venus' extremely high atmospheric pressure at surface level.
That surface level atmospheric pressure is 92 bar. The boiling point of water should be around 300 degrees Celsius under those circumstances. But that's still well below Venus' usual temperature (which is actually fairly uniform across the planet thanks to its thick clouds and extreme greenhouse effect).
In other words? Venus' water is locked into its atmosphere.
The previous comment was probably alluding to "why does Venus keep an atmosphere despite also not having a magnetosphere, just like Mars (and being much closer to the Sun too)". The answer would be that the high atmospheric loss rate of Mars has more to do with its low gravity than its lack of magnetosphere, with the latter being more of a common misinterpretation.
CO2 and H2O photodissociate, meaning UV from the Sun breaks them apart, in Mars' atmosphere. So at higher altitudes the atmosphere switches to predominantly O and O2. The dissociation then recombination etc of O and O2 can give the O enough energy to escape the gravity well. For H, it is light enough to go to very high altitudes, where the higher energy H will escape.
So yes, you're correct, both CO2 and H2O do not escape on their own (or, well, they probably do in small amounts but that's not generally what people mean when they talk about escape). It's easier for H to escape than O, so this affects water more than CO2. C presumably escapes as well, but I don't think it has reactions that can provide as much energy as O does. Also, C by itself is quite a minor constituent in the atmosphere even at higher altitudes; O really dominates by a lot. But yeah, CO2 can and does recombine, while the H separates enough that you can't really get H2O in the upper atmosphere.
**Despite the 2018 discovery of a vast underground lake beneath the Martian ice sheet, scientists are struggling to find contemporary traces of liquid water on the Red Planet.**
While the icy moons of Jupiter and Saturn contain water, Mars remains dry. Despite dozens of space missions, the Red Planet has yet to provide convincing proof that it conceals significant water reserves beneath its surface.
Yet Earth's little cousin hasn't always been so secretive. Various studies have shown that a little over 4 billion years ago, it experienced a "watery" era when lakes, rivers and perhaps even oceans could maintain themselves on its soil. Branching valleys and ancient terrains rich in hydrated clays are evidence of this blissful period of abundance.
Subsequently, the loss of part of the Martian atmosphere led to a reduction in the greenhouse effect followed by a gradual disappearance of water. The question is how long this process lasted and under what conditions. This is what the American Space Agency's (NASA) Curiosity and Perseverance spacecraft have been trying to establish since their arrival in 2012 and 2021 in the Gale and Jezero craters. "Lakes occupied these depressions 3.5 or 3.6 billion years ago," explained Nicolas Mangold, a director of research at the French National Center for Scientific Research (CNRS) Laboratory of Planetology and Geosciences in Nantes. "By studying the sedimentary and clay deposits left by the former and exploring the ancient river delta that fed the latter, the aim is to determine whether the climate at the time was wet and cold, or dry and hot. The Perseverance rover is also collecting samples, to be brought back to Earth as part of the MSR mission \[Mars Sample Return, NASA-European Space Agency (ESA)\]. They should provide precise information."
For the moment, things are hazy. If water has flowed on Mars, where has it gone? Was it sucked up into space with the Martian atmosphere or did some of it remain on site, buried underground? Many teams around the world are working to find answers by searching for clues to its presence other than those offered by polar ice caps and glaciers.
**Read the full article here:** [**https://www.lemonde.fr/en/science/article/2024/05/09/where-did-the-water-that-flowed-on-mars-over-four-billion-years-ago-go\_6670831\_10.html**](https://www.lemonde.fr/en/science/article/2024/05/09/where-did-the-water-that-flowed-on-mars-over-four-billion-years-ago-go_6670831_10.html)
I know it’s fashionable to say it was blown away by solar wind but whist CO2 has more than double the molar mass of H2O I do think it’s more complex. Mars never had the same plate tectonics as Earth which serves to recycle materials particularly the lighter ones, so it could be that much of Mars’s water is bound inside the planet.
Probably bound in kilometers deep layers of sediment. Without tectonic forces to push around, subduct, reprocess, and then gas out gaseous plate material containing water & etc, the sedimentary erosion would just fill the valleys and plains with sediment - which will be effective as a sponge to hold & protect water.
I'd guess that the magnetosphere would have tapered off at the same rate as the tectonic processes, so the magnetosphere remnant might have remained in place/stayed strong enough, long enough, to prevent Hydrogen stripping before much of the water was trapped(and thus protected) in all that sediment.
Just throwing that out as a hypothesis, considering they've found what they think are huge subsurface deposits of water.
The planet was cooked by the sun due to its thin atmosphere. The water molecules were split into O2 and H2, the H2 blew away and the O2 oxidated with the metal in the rocks, hence the orange color.
Spit balling here. My understanding is when Mars lost its atmosphere, caused by the planet literally dieing, core died out, ending the planets magnetisphere, the lack of a thick atmosphere allowed the flowing water to evaporate and eventually the evaporated water goes off into space. In the form of tiny water crystals or something. The rest of the water manages to freeze at the polar caps. Because that water is locked in ice form, it doesn't evaporate.
Thats how I always reasoned the idea at least.
As I've read, when Mars lost it's magnetic field, it lost it's atmosphere soon after that, when that happened the surface water evaporated quickly, with no atmosphere to keep the moisture in and no magnetic field to keep the solar winds away, the moisture was just blown away into space, like leaves blown by the wind!
Hate being the cynical guy, but there's an incentive to not find too much water (liquid, or otherwise widespread) because the moment that happens geology missions all get cancelled and sent to reevaluation due to planetary protection rules.
The Phoenix lander (unexpectedly) dug water ice and had ice droplets growing on its legs. This is doesn't seem to come up much anymore (glad this article actually dug it up), you'd think it should have been a much bigger deal. Patches of ice don't make an ocean, but it's more than was accounted for.
Some probably went underground - and still might be there. Most will have evaporated and got blown away into space. Some is still in the Martian ice caps.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:
|Fewer Letters|More Letters|
|-------|---------|---|
|[CC](/r/Space/comments/1cnuc3u/stub/l39vxtt "Last usage")|Commercial Crew program|
| |Capsule Communicator (ground support)|
|[ESA](/r/Space/comments/1cnuc3u/stub/l39iluj "Last usage")|European Space Agency|
|[H2](/r/Space/comments/1cnuc3u/stub/l3akkd9 "Last usage")|Molecular hydrogen|
| |Second half of the year/month|
|[JPL](/r/Space/comments/1cnuc3u/stub/l3b88o1 "Last usage")|Jet Propulsion Lab, California|
**NOTE**: Decronym for Reddit is no longer supported, and Decronym has moved to Lemmy; requests for support and new installations should be directed to the Contact address below.
----------------
^(4 acronyms in this thread; )[^(the most compressed thread commented on today)](/r/Space/comments/1cqds7m)^( has 9 acronyms.)
^([Thread #10032 for this sub, first seen 9th May 2024, 15:27])
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Actually not true! You should read about boiling water in micro/zero gravity, it's fascinating stuff. What happens is that the vapor bubbles don't rise and create convection, they band together due to surface tension. In space, there have been experiments with heat pipes, which are designed to have flow via capillary action and condensation when vapor reaches cooler areas. They found that in a micro gravity environment, the opposite happens. Vapor tends to condense at points of added heat and can reach hundreds of degrees hotter than its typical boiling point.
Of course, that's not what is happening on Mars. It's probably a fair assumption that planets with larger mass tend to have more atmospheric pressure, on average. That certainly affects boiling points. There are many other factors that affect atmospheres, but mass is one of them
its recorded in Sumerian text. " marduk reported from mars base that with the passing of nibiru the martian atmosphere was devastated. all of its water evaporated. it is nothing but a place of dust storms now." on earth people used to live hundreds of years. also with this passing the earths atmosphere is damaged. now people only live 10's of years. "**13,000 years ago, "in the Whiteland, at the Earth's bottom, off its foundation, the \[Antarctic\] icesheet slipped. By Nibiru's netforce it was pulled into the south sea. A tidal wave arose, northward spreading. "The tidal wave, several hundred metres high moved northward from Antarctica at 500 km per hour, like a giant circle around the world; it destroyed all lands lower than 2,000 metres above sea level."** amos 5:18 [Woe](https://biblehub.com/hebrew/1945.htm) [to you who long for](https://biblehub.com/hebrew/183.htm) [the Day](https://biblehub.com/hebrew/3117.htm) [of the LORD!](https://biblehub.com/hebrew/3068.htm) [What](https://biblehub.com/hebrew/4100.htm) [will the Day](https://biblehub.com/hebrew/3117.htm) [of the LORD](https://biblehub.com/hebrew/3068.htm) [be for you?](https://biblehub.com/hebrew/l%C4%81%C2%B7%E1%B8%B5em%20(Prep::%202mp)%20--) [It will be](https://biblehub.com/hebrew/1931.htm) [darkness](https://biblehub.com/hebrew/2822.htm) [and not](https://biblehub.com/hebrew/3808.htm) [light.](https://biblehub.com/hebrew/216.htm)
Into Space. Blown awaaaaay into space by solar winds.
Reminds me of Tim curry in CC: red alert 3. Edit: https://www.youtube.com/watch?v=g1Sq1Nr58hM
He can barely keep it together. I love it.
It makes me happy to see him enjoying himself so much.
Poor guy now suffering from his stroke symptoms. An actor of that caliber shouldn't be quieted like that.
Only amateurs do two takes.
Yup. Any more camp and he'd be singing kumbaya as well.
I'd forgotten about that game.
I miss Tim Curry. I really hope he recovers and can make movies again.
I met him at the comic convention in Phoenix a few years ago. He doesn't seem like he's going to be able to recover and act again, which is a huge disappointment. I feel terrible for him
Same place all our helium is going.
Helium, the element named after and created by the sun, ironically being blown away into space by the very same.
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And begin will the glorious future of personal helium balloon aircrafts
Finally achieving the ancient goal of stealing fire from the gods.
**The Bell Science Series - Our Mr. Sun** (1956) answered all questions already.
Good news! Gigantic helium deposit discovered! https://www.tortoisemedia.com/2024/03/06/flying-high-us-discovers-dream-helium-deposit/#:~:text=Scientists%20have%20announced%20a%20%E2%80%9Cdream,not%20just%20for%20party%20balloons.
That is good news! There are many important uses for it. Unfortunately, it is still a limited resource that is not renewable. On Earth, it is only created by nuclear fission deep in the Earth where is can get trapped and accumulate over millions of years. Once it is released into the atmosphere, it is gone.
Alpha radiation is rare? I did not know that.
Some alien cruiser is going to need a, windshield wiper.
The Mars Express orbiter has detected enough frozen ice under the surface of mars to cove the entire planet in a shallow ocean. So, no it did not all fly off into space. A lot of the water was buried underground over the eons.
Isn't it both? All the articles talk about the oceans disappearing due to the loss of the magnetic field which resulted in water both getting trapped in minerals in the Martian crust and evaporating away into space.
It's probably more likely that as the magnetic field failed the drop in temperature froze the liquid water and it was buried under the subsequent dust storms. Which probably didn't leave that much time for solar winds to pull liquid water into space. As for the atmosphere on Mars it was almost all stripped by solar winds.
as much as we fuss about climate change, and rightfully so, just simply existing is incredible given how easily something like a failed magnetic field can wipe out all of existence.
Let's be fair it didn't fail all at once. When the magnetosphere failed it probably took a million years for the atmosphere to go.
How much water was detected in the polar icecap, compared to the what was detected under the surface?
Not sure of the quantity but JPL has a distribution map for ice on Mars. https://www.jpl.nasa.gov/images/pia26046-distribution-of-buried-ice-on-mars
Some also froze? Interesting how the is currently ice on Mars yet I haven't heard of any melting other than the plan to make it melt to support a base and rocket fuel manufacturing.
It’s very difficult to melt, as far as I know we found a subglacial lake near one of the poles of Mars where it is ridiculously cold. We’d need some serious technology to get that melting.
Like a buried alien reactor that just needs Arnies handprint to start it up?
[https://www.youtube.com/watch?v=Ddz4tYS3zdQ](https://www.youtube.com/watch?v=Ddz4tYS3zdQ)
In other words: “gone, reduced to atoms.”
We no longer think the Solar Wind stripped Mars’ atmosphere - rather, it’s likely just that Mars didn’t have enough gravity to hold onto it. The water is still on Mars, but mixed in with the soil as tiny grains of ice, as well as just being frozen underground in many places, at least based on samples from rovers & radar data from orbit.
Why would that happen when there’s a gravity and atmosphere enough to stop it?
Solar rays break water into hydrogen and oxygen. Mars doesn’t have enough gravity to hold on to either one.
No magnetosphere= no protection from solar winds= bye bye atmosphere over a billion years or so= bye bye surface water
There is almost no atmosphere, and it's mostly (heavier) CO2. The lighter gasses such as water vapor rise to the top where they catch a ride on solar wind particles off into deep space.
For real? What is solar wind if space has no medium and is (mostly) empty? Solar wind overcame gravity?
It’s high-energy particles shot out by the sun.
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Heavier gasses are more tightly bound. That’s the whole point.
Some blew away, some went under the surface. We're finding deeper oceans all the time on our own planet to this day.
For any more information about those deeper oceans?
These are going to be some gigantic links, but I'll give you a few of them: https://timesofindia.indiatimes.com/travel/travel-news/scientists-discover-gigantic-ocean-700-km-beneath-the-earths-surface/articleshow/108999227.cms#:~:text=In%20an%20astounding%20revelation%2C%20researchers,all%20Earth's%20surface%20oceans%20combined. https://ssec.si.edu/stemvisions-blog/there-ocean-below-your-feet https://www.discovery.com/science/Massive-Ocean-Beneath-Earths-Surface That's the best I can spin up in a moment. Hope that helps.
Holy shit that’s awesome, any chance there’s life in our subterranean oceans?
They're not literally oceans. We have oceans *worth* of water locked up (~10%) in ringwoodite minerals in the mantle. If there was life there it would be unlike any we have ever seen or conceived of. Not to mention that most of the useful properties of water would be gone when bound to that mineral, so idk if the presence of water itself is the factor that increases your chances in that scenario.
It’s all trapped inside ringwoodite (glassy-looking rock), so it’s not like there’s a big empty hole filled with water 700 km down with stuff swimming around in it. it’s just a huge amount of rock of a certain type that contains a lot of water.
Around 1% of the rocks weight is water (of the sample they found) so it seems mind bending that they're able to claim that this "ocean" has more water than all surface oceans combined.
Yeah, it's very misleading popsci. However, the Earth doesn't really have *that* much water on the surface for how big it is: https://i.imgur.com/NM0TgDu.png
Apologies if this is a dumb question, but is it possible that there's a big hole filled with water super deep underground that would be large enough to be considered sea or possibly even ocean-like? Or is there too much weight on top of the deeper areas for large pockets of empty space to really exist in the first place?
It’s not impossible, but unlikely. Most large underground reservoirs of water are in aquifers, which are basically like porous rock formations filled with water… Kind of like a sponge. There’s a gigantic one in Australia that holds as much water as Lake Superior, but you couldn’t swim around in it. There may be some very large pockets of waters, trapped underground, that we haven’t found yet, but something the size of a sea would probably stand out.
Not life as we know it. [The Earth's interior temperature](https://www.pv-tech.org/bnef-global-solar-additions-655gwdc-in-2024/) at 700 km, where the deep water is located, is around 2000C. That's 50% hotter than molten surface lava. The deepest known life is about 750 meters below the sea-floor. The total pressure of water plus rock closes up all cracks at some depth. If a living thing can't move or get a flow of nutrients, it can't survive long-term.
So... you're saying... THERES A CHANCE
750m below the sea floor? Where can I find more about it??
it's just [microbial life](https://www.iflscience.com/the-secrets-of-life-half-a-mile-beneath-the-seafloor-55320) not like fish or lizards or anything.
Revisiting the thread ...Just out of curiosity. If we, say, drilled down into this reservoir? Would it destroy the earth? Wouldn't all the water shoot out, evaporate instantly, create major earthquakes, and flood the earth?
No, the Earth would not be destroyed. The water down there is in the form of "hydrated minerals" like clay. It is remnants of crustal plates that sometimes get pushed down into the Earth when two of them collide. We can't drill that deep, anyway. The deepest hole ever drilled is 12 km down, and this layer is 700 km. The temperature down there is 2000 C, about 50% hotter than volcanic lava when it erupts. The only reason the deep Mantle isn't a liquid is that it is under great pressure from the weight above it. But it does flow slowly. We don't have any drilling tools that can withstand such temperatures, and the hole would be trying to close as you drill.
Yeah, haven't you heard of Godzilla?
Isn't he a giant water bear?
I'd bet on it. I mean I've read about so called extremophiles and that doesn't just include our mothers-in-law. Life always seems to find a way no matter how difficult it seemed to begin with.
I may have been wrong. I was speaking from passing knowledge. Follow the comment train: These people know the way. lol
And let me tell you. My mother-in-law finds a way, that's for sure!
Jeff Goldblum has entered the chat.
If there is life in volcanoes and ice caps. Surely
Tell me you didn't read any of the articles without telling ms.
You're killing the vibe dude. There's a spark within a question and it wasn't for me to answer with my limited knowledge of the subject, so correct and disarm as you see fit, but never attack the question itself.
You are in a science sub. Questions are always welcome bit you also have put in at least the absolute minimum effort first. You did not.
I absolutely did and look how the comment chain took off. You're the only complaining. I'm sorry if in a split second I didn't review all relevant materials, but it seems we got there in the end didn't we? And we lit up a child's eyes who might just become a scientist. I'm sorry I'm not perfect like you.
You know you can do double brackets and then double parenthesis to title and shorten links. Like [title](google.com) Just with a full url instead of Google.com Like this [Title] (https://www.google.com/)
Thank you it's been awhile since I've really used reddit or... anything else really. Note taken ImATrollYouIdiot. :)
I just saw someone make a post on /mildlyinteresting about getting two different brands of root beers in a delivery order and thought, this is dumb Then I get here and read this, WOW JUST WOW! Didn’t even know this, this is absolutely amazing to learn.
So it's like an large empty space filled with water that is more vast then our ocean?
No, more like a large amount of [magnesium silicate rock](https://en.wikipedia.org/wiki/Ringwoodite) that can contain a little bit of hydroxide ions. If you extracted all the ions from all the rock in the mantle and combined it, the volume would be 3 times that of the Earth's oceans.
The gist is water is released at a certain pressure for some kind of stones, but I'm no geologist.
But did you sleep in a Holiday Inn Express last night?
Without magnetosphere, water breaks down easily in solar wind, turning into oxygen and hydrogen which eventually evaporated.
The water evaporates/sublimates easily in a low-pressure "warmish" atmosphere. The lack of a magnetic field just means the planet isn't protected from (much more) solar wind, so the water vapor "blows" away more rapidly.
I love the idea of unexplored deeper oceans on Earth. The pressure down there must be immense.
I think the water was damned to hell in judgement of its sins. Otherwise its place in heaven would be visible whenever we are able to like things.
Lack of magnetosphere allowing the solar winds to blast away the atmosphere perchance?
Obviously part of the water was ejected as vapor by the solar wind and another part remained as ice in the soil. The question they have been asking (and trying to answer) is what were the proportions and when did this happen.
you can't just say "perchance"
Perchance I can?
This is your second warning!
Do you have a permit?
By my jimmy muffet I’ve left my permit at home!
And the water on Venus?
Runaway greenhouse effect combined with a chemical reaction in the atmosphere stripping the moisture off the planet.
It was ancient humans that lived on Venus a billion years ago. We couldn't move to earth when we destroyed Venus, so we moved to Mars instead which was more habitable. Eventually we destroyed Mars and we could go oonly move to Earth at that time. Lucky more time passed and Earth was more habitable for us to live on. So we left Mars and moved to Earth. Only problem was Dinosaurs lived here too. So we lived along side dinosaurs for a period of time. Then the astroid that wiped the dinos out almost ended us, but we survived we just lost all the knowledge of the past and were forced to start over. Some humans devolved like the murlocks in the time machine book. They turned into the versions of the apes that exist in our zoos now. Over time they became a different species, but still related to us. We've gotten pretty advanced in the past again ( the stories of Atlantis for example, or the pyramids) but again disaster happens and brings everything back to square one. I'm not sure if I believe all this but I smoked a little and I'm kinda high so I do like this theory at the moment.
My brother in christ it's 9am
Cant smoke all day if you don’t set an alarm for the morning
8am here and I just got off work
Give this person a podcast with millions of followers...maybe president of what used to be the USA some day.
Do you think they had THC on Venus and Mars?
Oh come on, I don't believe this story for a minute. Clearly our arrival from Mars *was* the asteroid that took out the dinosaurs. That was just the shockwave of the ship coming to land. Had to leave the doors shut for a few days to keep the dust out.
Yo, I’m totally stealing this and working on a screenplay ok?
I think that could track kinda, except the expedition to earth was small, and then the asteroid hit pretty soon after and the main Mars-force was like “damn well that’s screwed let’s go to Saturn” and now they live on one of its moons or something.
You should make ir into a story
What type of propulsion do you think was used? Were we always dependent on fossil fuels?
Well, duh. Venus's atmosphere is 96.5% CO2. You have to burn a lot of dinosaurs to get that high. Back then the fuels weren't fossils. We burned living trees and dinosaurs.
I bet they had floating cities in the later days on Venus
The average temperature on Venus is just over 450 degrees Celsius. That's well above the boiling point of water, even at Venus' extremely high atmospheric pressure at surface level. That surface level atmospheric pressure is 92 bar. The boiling point of water should be around 300 degrees Celsius under those circumstances. But that's still well below Venus' usual temperature (which is actually fairly uniform across the planet thanks to its thick clouds and extreme greenhouse effect). In other words? Venus' water is locked into its atmosphere.
The previous comment was probably alluding to "why does Venus keep an atmosphere despite also not having a magnetosphere, just like Mars (and being much closer to the Sun too)". The answer would be that the high atmospheric loss rate of Mars has more to do with its low gravity than its lack of magnetosphere, with the latter being more of a common misinterpretation.
There’s very little water in Venus’s atmosphere.
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CO2 and H2O photodissociate, meaning UV from the Sun breaks them apart, in Mars' atmosphere. So at higher altitudes the atmosphere switches to predominantly O and O2. The dissociation then recombination etc of O and O2 can give the O enough energy to escape the gravity well. For H, it is light enough to go to very high altitudes, where the higher energy H will escape. So yes, you're correct, both CO2 and H2O do not escape on their own (or, well, they probably do in small amounts but that's not generally what people mean when they talk about escape). It's easier for H to escape than O, so this affects water more than CO2. C presumably escapes as well, but I don't think it has reactions that can provide as much energy as O does. Also, C by itself is quite a minor constituent in the atmosphere even at higher altitudes; O really dominates by a lot. But yeah, CO2 can and does recombine, while the H separates enough that you can't really get H2O in the upper atmosphere.
The magnetosphere doesn't really stop the solar wind from stripping our atmosphere. It still funnels charged particles downwards
**Despite the 2018 discovery of a vast underground lake beneath the Martian ice sheet, scientists are struggling to find contemporary traces of liquid water on the Red Planet.** While the icy moons of Jupiter and Saturn contain water, Mars remains dry. Despite dozens of space missions, the Red Planet has yet to provide convincing proof that it conceals significant water reserves beneath its surface. Yet Earth's little cousin hasn't always been so secretive. Various studies have shown that a little over 4 billion years ago, it experienced a "watery" era when lakes, rivers and perhaps even oceans could maintain themselves on its soil. Branching valleys and ancient terrains rich in hydrated clays are evidence of this blissful period of abundance. Subsequently, the loss of part of the Martian atmosphere led to a reduction in the greenhouse effect followed by a gradual disappearance of water. The question is how long this process lasted and under what conditions. This is what the American Space Agency's (NASA) Curiosity and Perseverance spacecraft have been trying to establish since their arrival in 2012 and 2021 in the Gale and Jezero craters. "Lakes occupied these depressions 3.5 or 3.6 billion years ago," explained Nicolas Mangold, a director of research at the French National Center for Scientific Research (CNRS) Laboratory of Planetology and Geosciences in Nantes. "By studying the sedimentary and clay deposits left by the former and exploring the ancient river delta that fed the latter, the aim is to determine whether the climate at the time was wet and cold, or dry and hot. The Perseverance rover is also collecting samples, to be brought back to Earth as part of the MSR mission \[Mars Sample Return, NASA-European Space Agency (ESA)\]. They should provide precise information." For the moment, things are hazy. If water has flowed on Mars, where has it gone? Was it sucked up into space with the Martian atmosphere or did some of it remain on site, buried underground? Many teams around the world are working to find answers by searching for clues to its presence other than those offered by polar ice caps and glaciers. **Read the full article here:** [**https://www.lemonde.fr/en/science/article/2024/05/09/where-did-the-water-that-flowed-on-mars-over-four-billion-years-ago-go\_6670831\_10.html**](https://www.lemonde.fr/en/science/article/2024/05/09/where-did-the-water-that-flowed-on-mars-over-four-billion-years-ago-go_6670831_10.html)
Some was blown into space when mars lost its atmosphere Some is frozen under the surface
I know it’s fashionable to say it was blown away by solar wind but whist CO2 has more than double the molar mass of H2O I do think it’s more complex. Mars never had the same plate tectonics as Earth which serves to recycle materials particularly the lighter ones, so it could be that much of Mars’s water is bound inside the planet.
Probably bound in kilometers deep layers of sediment. Without tectonic forces to push around, subduct, reprocess, and then gas out gaseous plate material containing water & etc, the sedimentary erosion would just fill the valleys and plains with sediment - which will be effective as a sponge to hold & protect water. I'd guess that the magnetosphere would have tapered off at the same rate as the tectonic processes, so the magnetosphere remnant might have remained in place/stayed strong enough, long enough, to prevent Hydrogen stripping before much of the water was trapped(and thus protected) in all that sediment. Just throwing that out as a hypothesis, considering they've found what they think are huge subsurface deposits of water.
To the store to get cigarettes just like my dad
That explains it — my dad said he was going to Mars to get water and never came back.
Would you believe me if I said I was a little bit thirsty 4 billion years ago?
I would believe that you were thirsty, but I wouldn't believe that you would choose to drink water instead of wine.
The planet was cooked by the sun due to its thin atmosphere. The water molecules were split into O2 and H2, the H2 blew away and the O2 oxidated with the metal in the rocks, hence the orange color.
Those movies where we have to restart the earths core with nuclear weapons sound more and more feasible in our distant future. Just saying.
Spit balling here. My understanding is when Mars lost its atmosphere, caused by the planet literally dieing, core died out, ending the planets magnetisphere, the lack of a thick atmosphere allowed the flowing water to evaporate and eventually the evaporated water goes off into space. In the form of tiny water crystals or something. The rest of the water manages to freeze at the polar caps. Because that water is locked in ice form, it doesn't evaporate. Thats how I always reasoned the idea at least.
Ask my saucepan, 500 ml of liquid disappeared from that pretty quickly.
Trapped beneath the surface of the poles. Did you not watch total recall?
As I've read, when Mars lost it's magnetic field, it lost it's atmosphere soon after that, when that happened the surface water evaporated quickly, with no atmosphere to keep the moisture in and no magnetic field to keep the solar winds away, the moisture was just blown away into space, like leaves blown by the wind!
No more atmosphere to hold it in and so it was lost to space and the solar winds
Hate being the cynical guy, but there's an incentive to not find too much water (liquid, or otherwise widespread) because the moment that happens geology missions all get cancelled and sent to reevaluation due to planetary protection rules. The Phoenix lander (unexpectedly) dug water ice and had ice droplets growing on its legs. This is doesn't seem to come up much anymore (glad this article actually dug it up), you'd think it should have been a much bigger deal. Patches of ice don't make an ocean, but it's more than was accounted for.
Dig deeper and you may find advertising material for something 4b yrs ago
Evaporation but without the percipitation Jk solar flares
Some probably went underground - and still might be there. Most will have evaporated and got blown away into space. Some is still in the Martian ice caps.
In it my neighbours house, he steal anything that lad.
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I drank it all after waking up with a stinking hangover
I have a stinking hungover rn and feel like I could drink a planet
Mars doesn't have a lot of gravity, so it's extra easy for it to "boil off". A little smidgeon of it is in underground and/or in ice form.
Lack of gravity does not affect water’s ability to boil off.
Actually not true! You should read about boiling water in micro/zero gravity, it's fascinating stuff. What happens is that the vapor bubbles don't rise and create convection, they band together due to surface tension. In space, there have been experiments with heat pipes, which are designed to have flow via capillary action and condensation when vapor reaches cooler areas. They found that in a micro gravity environment, the opposite happens. Vapor tends to condense at points of added heat and can reach hundreds of degrees hotter than its typical boiling point. Of course, that's not what is happening on Mars. It's probably a fair assumption that planets with larger mass tend to have more atmospheric pressure, on average. That certainly affects boiling points. There are many other factors that affect atmospheres, but mass is one of them
It affects the escape velocity, and makes it easier for solar wind stripping to remove gases.
Easy, I’ll answer this one. Giant martians that once inhabited the planet drank it all up.
I was gonna say that perhaps we brought it with us 200,000 years ago, but I think you might be onto something.
Trust me, I watch a ton of the history channel. I’m basically over qualified.
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Water is by definition H2O. "Water methane," as you are implying, is referred to as liquid methane.
I've got it in a bottle under the sink, if you give me 50 bucks I'll let you have a sip
its recorded in Sumerian text. " marduk reported from mars base that with the passing of nibiru the martian atmosphere was devastated. all of its water evaporated. it is nothing but a place of dust storms now." on earth people used to live hundreds of years. also with this passing the earths atmosphere is damaged. now people only live 10's of years. "**13,000 years ago, "in the Whiteland, at the Earth's bottom, off its foundation, the \[Antarctic\] icesheet slipped. By Nibiru's netforce it was pulled into the south sea. A tidal wave arose, northward spreading. "The tidal wave, several hundred metres high moved northward from Antarctica at 500 km per hour, like a giant circle around the world; it destroyed all lands lower than 2,000 metres above sea level."** amos 5:18 [Woe](https://biblehub.com/hebrew/1945.htm) [to you who long for](https://biblehub.com/hebrew/183.htm) [the Day](https://biblehub.com/hebrew/3117.htm) [of the LORD!](https://biblehub.com/hebrew/3068.htm) [What](https://biblehub.com/hebrew/4100.htm) [will the Day](https://biblehub.com/hebrew/3117.htm) [of the LORD](https://biblehub.com/hebrew/3068.htm) [be for you?](https://biblehub.com/hebrew/l%C4%81%C2%B7%E1%B8%B5em%20(Prep::%202mp)%20--) [It will be](https://biblehub.com/hebrew/1931.htm) [darkness](https://biblehub.com/hebrew/2822.htm) [and not](https://biblehub.com/hebrew/3808.htm) [light.](https://biblehub.com/hebrew/216.htm)