Scientists: Mars Has A 95% CO2 Atmosphere…But ‘There Is Little To Retain Heat On The Planet’

Earth’s atmosphere contains 400 ppm CO2 (0.04%). Mars has a 950,000 ppm (95%) CO2 atmosphere. But Mars has surface temperatures that are about -75°C colder on average than Earth’s because atmospheric density, or pressure, is the “game changer” largely determining planetary temperatures. Image Source: Smithsonian National Air and Space Museum Surface temperatures on Mars The … Continue reading Scientists: Mars Has A 95% CO2 Atmosphere…But ‘There Is Little To Retain Heat On The Planet’