below are differences between earth and mars
Size between mars and earth
Earth is roughly twice the diameter of the mars measuring about 12742 km compared to mars 6779km and is about 10 times more massive than mars.
The position
the earth takes the third position while mars take the fourth position
Gravity
mars have a gravity of about 3.72 while earth has about 9.81.
Temperature
Mars is much colder with average temperature around -63 degrees and extremes ranging from -125 to -62 while earth maintains moderate climate due to its thick atmosphere and greenhouses with average temperature suitable for life.
Atmosphere
Mars is composed of thin layer composed of carbon dioxide 95.3 percent, traces nitrogen and argon resulting in less protection from solar radiation while earth is composed of dense atmosphere of nitrogen 78% and oxygen 21%for supporting life and regulating temperature.
Water
Mars has mostly frozen water and deed subsurface reservoirs with only traces of water on the surface while earth has abundant liquid water covering 71%of its surfaces.
Distance from the sun
Mars is approximately142 million miles from the sun while earth is 93 million miles away
