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mjolnir 04-22-2021 09:23 AM

NASA extracts breathable oxygen from Martian air
 
"NASA has logged another extraterrestrial first on its latest mission to Mars: converting carbon dioxide from the Martian atmosphere into pure, breathable oxygen, the U.S. space agency said on Wednesday. ...In its first activation, the toaster-sized instrument dubbed MOXIE, short for Mars Oxygen In-Situ Resource Utilization Experiment, produced about 5 grams of oxygen, equivalent to roughly 10 minutes' worth of breathing for an astronaut, NASA said." https://www.reuters.com/lifestyle/sc...ir-2021-04-22/

floppy_stuttgart 04-22-2021 09:42 AM

Go to the internet..
a) buy few cartridges
https://en.wikipedia.org/wiki/Rebreather
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039778/
b) buy an open sources computer
c) go under the water
.. you will feel like on Mars?

mjolnir 04-22-2021 10:03 AM

I believe they are using a process similar to this one to break the CO2 molecules which make up 95% (approx.) of the thin Martian atmosphere into CO and O2: https://pubs.rsc.org/-/content/artic...h#!divAbstract

business_kid 04-26-2021 05:48 AM

I admire the engineering achievement. Personally, I find this research rather pointless. It's fuelling scientific dreams, not advancing knowledge. Earth has
  • An Oxygen cycle
  • A Nitrogen cycle
  • A Carbon Dioxide cycle
  • Several Soil Regeneration cycles. All the nourishment taken out of soil is replaced in various ways.

All are necessary to sustain civilization. Growing civilizations, as a general rule, aren't very technically savvy. There's a little oxygen there - so?

igadoter 04-26-2021 07:00 AM

They can convert CO2 on Mars into oxygene but can't do the same on Earth? We are closing coal-fired power stations because of CO2 they emit. It is said all this climate change is because of CO2. So if NASA can do this on Mars let do the same here - and forget climate change meetings.

mjolnir 04-26-2021 03:14 PM

Quote:

Originally Posted by igadoter (Post 6245014)
They can convert CO2 on Mars into oxygene but can't do the same on Earth? We are closing coal-fired power stations because of CO2 they emit. It is said all this climate change is because of CO2. So if NASA can do this on Mars let do the same here - and forget climate change meetings.

Of course they can do the same on Earth. It's just not conducive to lessening 'climate change' by using an energy intensive process to try to remove CO2 even if one believes that such a procedure is a necessity, of which I am, at this point, agnostic.

Ser Olmy 04-26-2021 04:04 PM

Quote:

Originally Posted by igadoter (Post 6245014)
They can convert CO2 on Mars into oxygene but can't do the same on Earth?

Of course we can, if by "convert" you mean "split molecules using heat and/or electricity".

The problem is that the process described would not only be useless on Earth, it would be directly harmful to most oxygen-breathing organisms, as it splits CO2 into CO and O, and then recombines pairs of oxygen atoms into O2.

The CO is then vented into the atmosphere, which is something you don't want to do if there are breathing organisms in the immediate vincinity. Carbon monoxide binds strongly to hemoglobin, which means it displaces oxygen and sticks around for long enough to choke you to death even at relatively low concentrations.

Emerson 04-26-2021 04:05 PM

Quote:

Originally Posted by igadoter (Post 6245014)
We are closing coal-fired power stations because of CO2 they emit.

We are closing them because politicians need more money in penalties, fees and taxes. Whopping 83% of population believes climate warming is real. They believe politicians. Same time 500 most prominent climate scientists assure there is no reason for concern in their official letter to the UN. This message is so well suppressed by mainstream media (read propaganda agencies) that most people haven't even heard of it.
Of course shutting down plants in West does not reduce emissions, the production of those plants is needed and they will pop up elsewhere in East. Where they produce more emissions than the cleaner ones we shut down in West. Only the jobs in West are lost and wealth flows to East. Thank you, shortsighted greedy politicians in West. The planet is the same, we can ruin our economies and we will, but emissions will stay and nothing will happen to the planet because unlike fake studies which are politically ordered in West those 500 scientists know what they are talking about.

boughtonp 04-26-2021 05:32 PM

Quote:

Originally Posted by Emerson (Post 6245241)
Same time 500 most prominent climate scientists assure there is no reason for concern in their official letter to the UN. This message is so well suppressed by mainstream media (read propaganda agencies) that most people haven't even heard of it.

I hadn't heard of it, so I looked it up and looked at the names - something it would seem you haven't done, or you might have subtracted from your 500 the likes of:
Quote:

Alexandre Krivitzki, Psychoanalyst, Member of the International Psychoanalytical Association
Appo van der Wiel, Senior Development Engineer
Don Schäfer, Former Director Shell Exploration & Production and New Business, Shell
...to pick just three that don't look remotely like climate scientists.

I wondered how many of those 500 people might actually be prominent enough in their field to actually call themselves climate scientists. Apparently 490 of them do not...
Quote:

Originally Posted by https://climatefeedback.org/evaluation/letter-signed-by-500-scientists-relies-on-inaccurate-claims-about-climate-science/
And while some outlets described the co-signers as experts in climate science, most are not. As noted in an analysis below, a significant portion of the co-signers are either engineers or professionals in non-technical fields. Only 10 identified themselves as climate scientists.

Heh.


ntubski 04-26-2021 06:15 PM

Quote:

Originally Posted by business_kid (Post 6244982)
Growing civilizations, as a general rule, aren't very technically savvy. There's a little oxygen there - so?

Where's this civilization stuff coming from? Elon Musk propaganda? The point is to save mass for future missions:
Quote:

Transporting a one-ton oxygen-conversion machine to Mars is more practical than trying to haul 25 tons of oxygen in tanks from Earth
Quote:

Originally Posted by igadoter (Post 6245014)
They can convert CO2 on Mars into oxygene but can't do the same on Earth?

There's already lots of ways to convert CO2 to oxygen on Earth. Planting a tree for example. You can't plant a tree on Mars.

Bonzoo 04-26-2021 06:45 PM

Quote:

Originally Posted by ntubski (Post 6245269)
Where's this civilization stuff coming from? Elon Musk propaganda? The point is to save mass for future missions:



There's already lots of ways to convert CO2 to oxygen on Earth. Planting a tree for example. You can't plant a tree on Mars.

You tried ?

Ser Olmy 04-26-2021 08:57 PM

Quote:

Originally Posted by Bonzoo (Post 6245273)
You tried ?

Erm, I don't think one has to try that in order to conclude that it would certainly fail. It's not quite as silly as trying to plant a tree on the moon, but pretty close.

boughtonp 04-27-2021 06:17 AM

Quote:

Originally Posted by Ser Olmy (Post 6245308)
Erm, I don't think one has to try that in order to conclude that it would certainly fail.

You might like to tell NASA that they're wasting their time then.

Quote:

Originally Posted by https://www.nasa.gov/centers/goddard/news/topstory/2005/mars_plants.html
"Our idea is to enable plants to survive on Mars by adding features from microscopic organisms called extremophiles that live in the most inhospitable environments on Earth," said Dr. Wendy Boss of North Carolina State University. Boss and her colleague, Dr. Amy Grunden, also of North Carolina State, head the research team working on this project.

Quote:

Originally Posted by https://www.nasa.gov/feature/can-plants-grow-with-mars-soil/
In reality, the soil on Mars actually does have the nutrients plants would need to survive on Mars! There may not be the right amount of nutrients depending on where astronauts land on the Red Planet, so fertilizers may need to be added to the soil.


ntubski 04-27-2021 06:47 AM

Yes, some hypothetical genetically modified tree might survive in a greenhouse on Mars. There aren't any trees existing today that you can plant on Mars (nor any greenhouse existing to plant them in). Whereas the news is about a machine that works today on Mars.

Also, let me anticipate the obvious next question by saying that I haven't personally checked for greenhouses on Mars, but I'm still pretty confident about there not being any ;)

boughtonp 04-27-2021 07:18 AM


 
Nobody said anything about surviving. :P

Anyway, the point is surely that, on Mars the conversion machine is currently the optimal solution, but on Earth there are already more efficient options.

I don't understand the apparent desire to keep using dirty methods of producing energy, augmented with a machine to clean-up unwanted emissions, rather than simply using known cleaner methods in the first place.



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