Planetary scientists discover evidence for a reduced atmosphere on ancient Mars

The transition from a reduced planet to an oxidized planet is referred to as the Great Oxidation Event or GOE. This transition was a central part of our planet's evolution, and fundamentally linked to the evolution of life here -- specifically to the prevalence of photosynthesis that produced oxygen. Planetary geologists have discovered that Mars underwent a great oxygenation event of its own -- billions of years ago, the red planet was not so red.

from Top Technology News -- ScienceDaily https://ift.tt/3qnChuC