NASA has admitted that it has "difficulty explaining" why oxygen is produced and then consumed on Mars. The US Space Agency has been scratching its heads ever since.
The reason is that NASA's own Curiosity rover on the Red Planet has shed some pretty interesting data back to our Pale Blue Dot showing that elevated methane levels have been recorded, and NASA can not explain why. Tests were done and completed to find out why these values were so high, but NASA does not know why.
The NASA Curiosity Rover "exhales" on Mars, analyzes it and tells NASA what types of gases are detected. However, something interesting has been discovered: Here on Earth, the background of certain gases increases and decreases with changing seasons, and something similar happens on Mars.
Mars' air is mainly composed of carbon dioxide, which contains 95% of the gas. Curiosity inhales CO2 in its tests, while the remaining 5% consists of a mixture of argon, carbon monoxide, nitrogen and oxygen. NASA has recorded these gases over a 1
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