Mars

I read recently that the atmosphere of Mars is 95% carbon dioxide ... see: Atmosphere of Mars. This surprised me since the atmosphere here on Earth is only 0.04% CO2. Now I understand that the Martian atmosphere is much thinner (1%) than it is on our planet, but it is still revealing and prompts the following observations:

- Mars obviously has no fossil fuels since it is questionable if it ever supported any life that left a legacy of hydrocarbons ... nor does it have any internal combustion engines. So where did this CO2 come from? The answer must be that there is a natural out-gassing from volcanoes and vents occurring there and, not having any plant life to convert this carbon dioxide to sugar and oxygen over the eons, this gas has kept building up. This also strongly suggest that this process must have happened, and probably still does occur, here on Earth.

- Being that CO2 is a greenhouse gas and given its huge percentage there, the temperature on Mars must be extraordinarily high. But no, it is cold enough there to freeze this CO2 into dry ice around it’s polar regions ... see picture above. Huh?

- Elon Musk is pointing to Mars as being the refuge that we must inhabit to escape from our Earth that is destroying itself with CO2-produced global warming. Why would we seek to flee to a planet that has many thousands of times more percentage of atmospheric carbon dioxide than we have here at home? Do government subsidies for electric cars and rocket ships have anything to do with this?

Afterward: Thinking more about Earthlings settling Mars — Mars obviously has no ozone layer like we do on Earth that protects us from the sun’s lethal cosmic rays. This would complicate the habitation process there enormously ... possibly too enormously.