Curiosity Finds Ancient Mars Had Higher Oxygen Levels

Credit: Mars: NASA
HOUSTON—Higher-than-anticipated concentrations of manganese oxides in rock veins studied by NASA’s Curiosity rover in the more than 3.5-billion-year-old Gale Crater on Mars point to an ancient Red Planet environment with higher concentrations of atmospheric oxygen. The findings complement those made...
Mark Carreau

Mark is based in Houston, where he has written on aerospace for more than 25 years. While at the Houston Chronicle, he was recognized by the Rotary National Award for Space Achievement Foundation in 2006 for his professional contributions to the public understanding of America's space program through news reporting.

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