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NASA's Gypsum Find Clear Evidence There Was Water On Mars
First time accepted submitter RCC42 writes "The Opportunity rover has found evidence that liquid water once flowed on Mars, through the discovery of gypsum — a mineral that can only be formed in the presence of water. Though other evidence in the past has suggested highly acidic water on Mars, this is the first evidence for water with a pH suitable for life as we know it."
Persians first calculated the volume of the earth, as a sphere. Invented spherical trigonometry, and all kinds of things.
Remember all that "Arab scientists and mathematicians" kind of talk? None of 'em were arabs. Mostly Persians, with roots in Khorasan - writing in Arabic.
It's similar to calling Sir Issac Newton a "Latin Physicist" because of the language used in the "Principia".
"Flyin' in just a sweet place,
Never been known to fail..."
Needless to say, Iranian civilization ain't what it used to be. This a major oil producing country with such inept leadership that they have to import refined fuels.
Persia's high point was a long time ago.
The world's burning. Moped Jesus spotted on I50. Details at 11.
If you want oil, go to titan.
Lakes of liquid ethane.
Transport cost might be a bit more than you bargained for... what with operating a tanker in orbit of a gas giant and all......
To think that it goes from solid to gas instantly without any liquid form on a planet (Mars) where there are dry river beds, would be logical.
Pressure is below the triple point for water so yes, it is logical to not expect liquid water on the exposed surface of Mars under current conditions. Ice directly sublimates to vapor.
It's also worth noting that liquid water could be a temporary thing maybe occurring when ice is melted by volcanism. That could result in the river valleys without any long term water presence. Or the river valley could be caused by flowing carbon dioxide. The presence of gypsum supports the your explanation that flowing water was present on Mars at some point.