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Science thread (Read 4339 times)
Jasin
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Re: Science thread
Reply #60 - Oct 24th, 2025 at 10:08am
 
Quick! Use it all up first, before someone else does.
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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.
 
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Re: Science thread
Reply #61 - Oct 24th, 2025 at 11:58am
 
...


https://apod.nasa.gov/apod/ap250907.html

Explanation: How much of planet Earth is made of water? Very little, actually. Although oceans of water cover about 70 percent of Earth's surface, these oceans are shallow compared to the Earth's radius. The featured illustration shows what would happen if all of the water on or near the surface of the Earth were bunched up into a ball. The radius of this ball would be only about 700 kilometers, less than half the radius of the Earth's Moon, and slightly smaller than Saturn's moon Rhea which, like many moons in our outer Solar System, is mostly water ice. The next smallest ball depicts all of Earth's liquid fresh water, while the tiniest ball shows the volume of all of Earth's fresh-water lakes and rivers. How any of this water came to be on the Earth and whether any significant amount is trapped far beneath Earth's surface remain topics of research.
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Re: Science thread
Reply #62 - Oct 24th, 2025 at 3:13pm
 
The main scientific reasoning is all that water came from comets and meteors billions of years ago and unlike Mars, was retained by our protective magnetic sphere and primordial atmosphere.
It's not really calculated, nor can be, regarding all the crystallised water and liquid water that is deep in the crust.
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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.
 
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Re: Science thread
Reply #63 - Oct 24th, 2025 at 7:49pm
 
Jasin wrote on Oct 24th, 2025 at 3:13pm:
The main scientific reasoning is all that water came from comets and meteors billions of years ago and unlike Mars, was retained by our protective magnetic sphere and primordial atmosphere.
It's not really calculated, nor can be, regarding all the crystallised water and liquid water that is deep in the crust.



Mars has a lot of water too -
it's mostly frozen and beneath the surface.
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Re: Science thread
Reply #64 - Oct 24th, 2025 at 9:29pm
 
Mars will always be a dead stillborn of a planet.
The concept and belief of a Mars colony even in 50 years time is insane! More a money making funding gimmick currently and that's the only thing working for it. A NASA scam.
Until we can do a self sufficient colony in the middle of the Antarctic, the Mars colony will be a catastrophe to put it mildly.
Even the Astro-Cosmological idea of planets having life because of an earth related Goldilocks zone is short sighted.
What they need to look for is planets with a sizable satellite moon relationship.
Mars needs something like Ceres pushed into orbit around it, to jumpstart it's magnetosphere as a first step entirely towards Retaining any semblance of micro life to begin with.
It's our moon that has given life the stimulus to evolve here.
The Pluto-Charon binary system is our best bet to discovering life here and it's not in any Goldilocks zone. Water (liquid) moons like Enceladus or Europa doesn't guarantee life. I reckon they too are sterile.
The gravitational effect of our moon stimulates movement in and on earth and movement provides change and change means evolutions.
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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.
 
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Re: Science thread
Reply #65 - Oct 24th, 2025 at 9:33pm
 
Hi JaSin,

Google AI:


Water on Mars is polluted with perchlorates,


which are toxic salts that lower the freezing point of water, allowing it to remain liquid on the Martian surface. This salty, briny water can also contain other salts like chlorides and sulfates of sodium, magnesium, and calcium. Before use, this water would require significant detoxification to remove these contaminants for both human health and equipment corrosion prevention. 


Perchlorates: The primary contaminant, perchlorates are toxic salts that are also corrosive to equipment. They are abundant on Mars and can absorb water from the atmosphere, forming liquid brines.
Other salts: The water also contains other salts like sulfates and chlorides of elements such as sodium, magnesium, and calcium.


Why it's liquid: The high concentration of these salts lowers the freezing point of the water, allowing it to exist as a liquid even at Mars' very low temperatures, in a process similar to how salt is used to de-ice roads on Earth.
Health and equipment concerns: Because these perchlorates are toxic to humans and corrosive to equipment, the water would need to be purified before it could be used for drinking, food production, or propellant manufacturing.
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Re: Science thread
Reply #66 - Oct 24th, 2025 at 9:42pm
 

Water on Mars is polluted with perchlorates.

So what is going on?

Just as we have plenty of seawater that we can't drink -
Mars also has water we can't drink -
however - perchlorates are much worse than NaCl in our sea water.

It makes ideas of going to Mars a whole lot more complicated.
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Re: Science thread
Reply #67 - Oct 25th, 2025 at 8:31am
 
It makes the whole 'mars colony' thing just a funding scam.
ScoMo gave NASA $350m towards the Mars Project, just because an Australian citizen was involved in the 'colony' side of things.

Personally, I would like to see probes go to Uranus, Neptune and Pluto-Charon.
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AIMLESS EXTENTION OF KNOWLEDGE HOWEVER, WHICH IS WHAT I THINK YOU REALLY MEAN BY THE TERM 'CURIOSITY', IS MERELY INEFFICIENCY. I AM DESIGNED TO AVOID INEFFICIENCY.
 
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