Authorities suspect that the missing grandmother from Pennsylvania might have fallen into a newly formed sinkhole.
NASA reports that the Curiosity rover has previously discovered bright white calcium sulfate, known as gypsum, on Mars, which ...
After heating, the monoclinic gypsum is first converted into the orthorhombic form without loss of water. When the temperature reaches 120 C, it loses 75% of its water of crystallization giving the ...