Astronomers have detected small, ruby-like crystals embedded in Martian rocks, which may also hide sapphires created in the ...

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Life on Mars sounds like something from a "Doctor Who" episode. But a study published in the International Journal of Astrobiology challenges the science fiction notion of that idea. The research ...

The discovery by the Mars rovers of carbonate in sedimentary rock on the Red Planet has enabled planetary scientists to rewind the clock and tell the tale of how Mars' warmer, watery climate 3.5 ...