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."

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Re:In other news...

[Jeremiah Cornelius]

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".