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Mars water surprise in Curiosity sample


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#1    seeder

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Posted 26 September 2013 - 07:38 PM

Mars water surprise in Curiosity rover soil samples

This could be a useful resource for future astronauts, they say.

"If you think about a cubic foot of this dirt and you just heat it a little bit - a few hundred degrees - you'll actually get off about two pints of water - like two water bottles you'd take to the gym," Dr Leshin explained.

"And this dirt on Mars is interesting because it seems to be about the same everywhere you go. If you are a human explorer, this is really good news because you can quite easily extract water from almost anywhere.

http://www.bbc.co.uk...onment-24287207

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#2    Valdemar the Great

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Posted 26 September 2013 - 07:45 PM

View Postseeder, on 26 September 2013 - 07:38 PM, said:

Mars water surprise in Curiosity rover soil samples

This could be a useful resource for future astronauts, they say.

"If you think about a cubic foot of this dirt and you just heat it a little bit - a few hundred degrees - you'll actually get off about two pints of water - like two water bottles you'd take to the gym," Dr Leshin explained.

"And this dirt on Mars is interesting because it seems to be about the same everywhere you go. If you are a human explorer, this is really good news because you can quite easily extract water from almost anywhere.

http://www.bbc.co.uk...onment-24287207
very interesting, but look a bit further down! It's a Pyramid!! :clap:

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#3    seeder

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Posted 26 September 2013 - 07:48 PM

View PostColonel Rhuairidh, on 26 September 2013 - 07:45 PM, said:

very interesting, but look a bit further down! It's a Pyramid!! :clap:

ha and i did not want to mention a pyramid shape on mars, it tends to attract the wrong sorts to this part of the forums :lol:

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#4    Valdemar the Great

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Posted 26 September 2013 - 07:48 PM

* Actually, more seriously, they say "heat it a little bit - a few hundred degrees". Assuming they mean C, is that because that's how much it'd take to boil the water off on Mars, seeing as there's not much atmosphere to speak of?

Edited by Colonel Rhuairidh, 26 September 2013 - 07:49 PM.

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#5    seeder

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Posted 26 September 2013 - 07:53 PM

View PostColonel Rhuairidh, on 26 September 2013 - 07:48 PM, said:

* Actually, more seriously, they say "heat it a little bit - a few hundred degrees". Assuming they mean C, is that because that's how much it'd take to boil the water off on Mars, seeing as there's not much atmosphere to speak of?

Thats not a bad question at all. Mars is known to be pretty damned cold tho

temps here:
http://en.wikipedia....ars#Temperature



trypos!

Edited by seeder, 26 September 2013 - 07:53 PM.

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#6    Waspie_Dwarf

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Posted 26 September 2013 - 09:59 PM

View PostColonel Rhuairidh, on 26 September 2013 - 07:48 PM, said:

* Actually, more seriously, they say "heat it a little bit - a few hundred degrees". Assuming they mean C, is that because that's how much it'd take to boil the water off on Mars, seeing as there's not much atmosphere to speak of?
Boiling point DROPS as pressure decreases, so the simple answer to your question is no.

In fact on Mars the air pressure is so low that water sublimes. Water ice doesn't melt from solid to liquid it goes straight from solid to gas in the same way that dry ice (solid CO2) does on Earth. This is why it is impossible for there to be open bodies of pure liquid water on the surface of Mars today.

The article is not talking water as a separate, independent molecule. It is water that is chemically bonded to the soil. The particles of soil are of the hydrated, rather than anhydrous form. This is known as water of crystallization or water of hydration.

The temperature of several hundred degrees is the temperature required to break the chemical bonds, separating the water from the soil particles. Only then do we have water in the sense that we would recognise it.

Edited by Waspie_Dwarf, 26 September 2013 - 11:28 PM.

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#7    seeder

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Posted 26 September 2013 - 10:44 PM

I knew waspie would give the answer! :tu:

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#8    Waspie_Dwarf

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Posted 26 September 2013 - 11:19 PM

View Postseeder, on 26 September 2013 - 10:44 PM, said:

I knew waspie would give the answer! :tu:

Well, once upon a time I was a chemist. I may have forgotten most of it but sometimes I know what is going on.

"Space is big. Really big. You just won't believe how vastly, hugely, mind-boggingly big it is. I mean, you may think it's a long way down the street to the chemist, but that's just peanuts to space." - The Hitch-Hikers Guide to the Galaxy - Douglas Adams 1952 - 2001

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#9    Almagest

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Posted 27 September 2013 - 01:48 AM

Yay for science. This was a pleasant news story to wake up to. :P

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#10    DONTEATUS

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Posted 27 September 2013 - 02:38 AM

View PostWaspie_Dwarf, on 26 September 2013 - 09:59 PM, said:

Boiling point DROPS as pressure decreases, so the simple answer to your question is no.

In fact on Mars the air pressure is so low that water sublimes. Water ice doesn't melt from solid to liquid it goes straight from solid to gas in the same way that dry ice (solid CO2) does on Earth. This is why it is impossible for there to be open bodies of pure liquid water on the surface of Mars today.

The article is not talking water as a separate, independent molecule. It is water that is chemically bonded to the soil. The particles of soil are of the hydrated, rather than anhydrous form. This is known as water of crystallization or water of hydration.

The temperature of several hundred degrees is the temperature required to break the chemical bonds, separating the water from the soil particles. Only then do we have water in the sense that we would recognise it.

Good call Waspie,THere always could be Liquid water underground on Mars,We just need to Dig a bit ,THats why Man needs to go to Mars.Its getting very exciting the information coming from the Red Planet ! Keep THe Info Coming !

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#11    ExplainInTheAss

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Posted 29 September 2013 - 02:43 PM

Probably a whole civilization buried down there, watch.


#12    diablo_04

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Posted 29 September 2013 - 03:07 PM

Is it me or i have read the same headline for at least one or two years "water found on mars" , almost every month I read the same headline.
Its not a news anymore, its time to move on!

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#13    DONTEATUS

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Posted 29 September 2013 - 06:09 PM

ITs not just you diablo 04 ITs the entire Planet, When Are we going to Put Man on Mars is my question ! ITs Just Money We cant take it to the Grave ! :tu:
Well some do ,Thats not the Point ! We need to Go to Mars with People ASAP , It Keeps our Imaginations going and Lots Of jobs  for people ! Makes the Earth people Smarter too !

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#14    Waspie_Dwarf

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Posted 29 September 2013 - 06:38 PM

View Postdiablo_04, on 29 September 2013 - 03:07 PM, said:

Is it me or i have read the same headline for at least one or two years "water found on mars" , almost every month I read the same headline.
Its not a news anymore, its time to move on!

You don't seem to be understanding WHY it is news or the significance of the discovery. Some of us do, that is why we know things HAVE moved on.

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#15    dibatag

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Posted 29 September 2013 - 10:58 PM

Water on Mars! great news one less problem to solve





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